# Solve the proportion

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A recipe for cookies calls for 4 eggs. The recipe makes 6 dozen cookies. how many eggs would be need to make 21 dozen cookies?

• Solve the proportion -

4 / 6 : x / 21

Cross multiply.

• Solve the proportion -

63 eggs?

• Solve the proportion -

No, from the proportion, you should see that x will be less than 21, not more.

4/6 : x/21 cross-multiplied ~~> 4*21=6x

Now solve for x. Multiply 4*21 and then divide both sides by 6. What's the answer?

• Solve the proportion -

14 eggs!

• Solve the proportion -

Right! :-)

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