# Proportions to Find Part a

## Cross - multiply to find a missing part of a proportion, a.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
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## Find the Parts Given the Percents and Whole - Overview

by CK-12 //basic
Overview
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## Example 1: Solve a Percent Problem Using a Percent Proportion

by CK-12 //basic
Goes through the steps of solving what is 24% of 325 using a percent proportion.
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## Find the Parts Given the Percents and Whole - Example 1

by CK-12 //basic
Whole number percentage calculations - without units
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## Find the Parts Given the Percents and Whole - Example 3

by CK-12 //basic
Decimal percentage calculations - without units
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## Find the Parts Given the Percents and Whole - Example 4

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Decimal percentage calculations - with units
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## Find the Parts Given the Percents and Whole - Example 5

by CK-12 //basic
Fraction percentage calculations - without units
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## Find the Parts Given the Percents and Whole - Example 6

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Fraction percentage calculations - with units
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## Find the Parts Given the Percents and Whole - Example 7

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Percentage calculation - one-step word problems
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## Find the Parts Given the Percents and Whole - Example 8

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Percentage calculation - two-step word problems
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