Finding the Fourth Proportional to 15,689,193.62, 21,653,656.70 and 13,071,546.38
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Solution
The fourth proportional to 15,689,193.62, 21,653,656.70 and 13,071,546.38 is: 18,040,874.81
Step by Step Solution
- Step 1: Write the proportion equation
15,689,193.62 : 21,653,656.70 = 13,071,546.38 : x - Step 2: Convert to fraction form
15,689,193.62/21,653,656.70 = 13,071,546.38/x - Step 3: Cross multiply
15,689,193.62x = 21,653,656.70 × 13,071,546.38 - Step 4: Simplify right side
15,689,193.62x = 283,046,777,839,424.19 - Step 5: Solve for x
x = 283,046,777,839,424.19/15,689,193.62 - Step 6: Final answer
x = 18,040,874.81
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.