Home / 20,407,499.40-28,161,286.29-12,672,375.66

Finding the Fourth Proportional to 20,407,499.40, 28,161,286.29 and 12,672,375.66

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Solution

The fourth proportional to 20,407,499.40, 28,161,286.29 and 12,672,375.66 is: 17,487,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,499.40 : 28,161,286.29 = 12,672,375.66 : x
  2. Step 2: Convert to fraction form
    20,407,499.40/28,161,286.29 = 12,672,375.66/x
  3. Step 3: Cross multiply
    20,407,499.40x = 28,161,286.29 × 12,672,375.66
  4. Step 4: Simplify right side
    20,407,499.40x = 356,870,398,935,687.69
  5. Step 5: Solve for x
    x = 356,870,398,935,687.69/20,407,499.40
  6. Step 6: Final answer
    x = 17,487,218.40

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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.