Finding the Fourth Proportional to 20,982,251.68, 31,454,705.76 and 8,199,849.76
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Solution
The fourth proportional to 20,982,251.68, 31,454,705.76 and 8,199,849.76 is: 12,292,477.73
Step by Step Solution
- Step 1: Write the proportion equation
20,982,251.68 : 31,454,705.76 = 8,199,849.76 : x - Step 2: Convert to fraction form
20,982,251.68/31,454,705.76 = 8,199,849.76/x - Step 3: Cross multiply
20,982,251.68x = 31,454,705.76 × 8,199,849.76 - Step 4: Simplify right side
20,982,251.68x = 257,923,861,477,006.62 - Step 5: Solve for x
x = 257,923,861,477,006.62/20,982,251.68 - Step 6: Final answer
x = 12,292,477.73
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.