Finding the Fourth Proportional to 15,442,836.12, 21,313,003.68 and 8,916,454.62
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Solution
The fourth proportional to 15,442,836.12, 21,313,003.68 and 8,916,454.62 is: 12,305,798.54
Step by Step Solution
- Step 1: Write the proportion equation
15,442,836.12 : 21,313,003.68 = 8,916,454.62 : x - Step 2: Convert to fraction form
15,442,836.12/21,313,003.68 = 8,916,454.62/x - Step 3: Cross multiply
15,442,836.12x = 21,313,003.68 × 8,916,454.62 - Step 4: Simplify right side
15,442,836.12x = 190,036,430,128,612.97 - Step 5: Solve for x
x = 190,036,430,128,612.97/15,442,836.12 - Step 6: Final answer
x = 12,305,798.54
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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.