Finding the Fourth Proportional to 15,063,939.16, 20,789,201.88 and 8,449,148.68
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Solution
The fourth proportional to 15,063,939.16, 20,789,201.88 and 8,449,148.68 is: 11,660,366.90
Step by Step Solution
- Step 1: Write the proportion equation
15,063,939.16 : 20,789,201.88 = 8,449,148.68 : x - Step 2: Convert to fraction form
15,063,939.16/20,789,201.88 = 8,449,148.68/x - Step 3: Cross multiply
15,063,939.16x = 20,789,201.88 × 8,449,148.68 - Step 4: Simplify right side
15,063,939.16x = 175,651,057,622,655.50 - Step 5: Solve for x
x = 175,651,057,622,655.50/15,063,939.16 - Step 6: Final answer
x = 11,660,366.90
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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.