Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 5 - Ratio and Proportion - 5.4 Solving Problems - 5.4 Exercises - Page 356: 11



Work Step by Step

We are given the proportion $\frac{x}{25}=\frac{4}{20}$. We can set the cross products equal to each other and solve for the unknown variable. $x\times20=25\times4$ $20x=100$ Divide both sides by 20. $x=5$
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