Finding the Fourth Proportional to 15,962,820.74, 22,028,691.77 and 8,620,653.17
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Solution
The fourth proportional to 15,962,820.74, 22,028,691.77 and 8,620,653.17 is: 11,896,500.92
Step by Step Solution
- Step 1: Write the proportion equation
15,962,820.74 : 22,028,691.77 = 8,620,653.17 : x - Step 2: Convert to fraction form
15,962,820.74/22,028,691.77 = 8,620,653.17/x - Step 3: Cross multiply
15,962,820.74x = 22,028,691.77 × 8,620,653.17 - Step 4: Simplify right side
15,962,820.74x = 189,901,711,482,931.69 - Step 5: Solve for x
x = 189,901,711,482,931.69/15,962,820.74 - Step 6: Final answer
x = 11,896,500.92
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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.