Finding the Fourth Proportional to 20,756,349.14, 31,134,524.43 and 15,112,489.46
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Solution
The fourth proportional to 20,756,349.14, 31,134,524.43 and 15,112,489.46 is: 22,668,734.71
Step by Step Solution
- Step 1: Write the proportion equation
20,756,349.14 : 31,134,524.43 = 15,112,489.46 : x - Step 2: Convert to fraction form
20,756,349.14/31,134,524.43 = 15,112,489.46/x - Step 3: Cross multiply
20,756,349.14x = 31,134,524.43 × 15,112,489.46 - Step 4: Simplify right side
20,756,349.14x = 470,520,172,290,487.50 - Step 5: Solve for x
x = 470,520,172,290,487.50/20,756,349.14 - Step 6: Final answer
x = 22,668,734.71
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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.