Finding the Fourth Proportional to 21,664,976.72, 29,847,420.02 and 15,128,252.42
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Solution
The fourth proportional to 21,664,976.72, 29,847,420.02 and 15,128,252.42 is: 20,841,901.19
Step by Step Solution
- Step 1: Write the proportion equation
21,664,976.72 : 29,847,420.02 = 15,128,252.42 : x - Step 2: Convert to fraction form
21,664,976.72/29,847,420.02 = 15,128,252.42/x - Step 3: Cross multiply
21,664,976.72x = 29,847,420.02 × 15,128,252.42 - Step 4: Simplify right side
21,664,976.72x = 451,539,304,148,321.44 - Step 5: Solve for x
x = 451,539,304,148,321.44/21,664,976.72 - Step 6: Final answer
x = 20,841,901.19
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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.