Finding the Fourth Proportional to 21,615,599.98, 29,824,649.04 and 12,912,073.84
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Solution
The fourth proportional to 21,615,599.98, 29,824,649.04 and 12,912,073.84 is: 17,815,747.47
Step by Step Solution
- Step 1: Write the proportion equation
21,615,599.98 : 29,824,649.04 = 12,912,073.84 : x - Step 2: Convert to fraction form
21,615,599.98/29,824,649.04 = 12,912,073.84/x - Step 3: Cross multiply
21,615,599.98x = 29,824,649.04 × 12,912,073.84 - Step 4: Simplify right side
21,615,599.98x = 385,098,070,656,565.12 - Step 5: Solve for x
x = 385,098,070,656,565.12/21,615,599.98 - Step 6: Final answer
x = 17,815,747.47
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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.