Finding the Fourth Proportional to 21,287,476.49, 31,951,402.19 and 13,175,915.36
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Solution
The fourth proportional to 21,287,476.49, 31,951,402.19 and 13,175,915.36 is: 19,776,368.09
Step by Step Solution
- Step 1: Write the proportion equation
21,287,476.49 : 31,951,402.19 = 13,175,915.36 : x - Step 2: Convert to fraction form
21,287,476.49/31,951,402.19 = 13,175,915.36/x - Step 3: Cross multiply
21,287,476.49x = 31,951,402.19 × 13,175,915.36 - Step 4: Simplify right side
21,287,476.49x = 420,988,970,712,531.75 - Step 5: Solve for x
x = 420,988,970,712,531.75/21,287,476.49 - Step 6: Final answer
x = 19,776,368.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.