Home / 20,756,163.78-31,134,356.28-13,612,932.90

Finding the Fourth Proportional to 20,756,163.78, 31,134,356.28 and 13,612,932.90

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Solution

The fourth proportional to 20,756,163.78, 31,134,356.28 and 13,612,932.90 is: 20,419,471.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756,163.78 : 31,134,356.28 = 13,612,932.90 : x
  2. Step 2: Convert to fraction form
    20,756,163.78/31,134,356.28 = 13,612,932.90/x
  3. Step 3: Cross multiply
    20,756,163.78x = 31,134,356.28 × 13,612,932.90
  4. Step 4: Simplify right side
    20,756,163.78x = 423,829,902,924,333.62
  5. Step 5: Solve for x
    x = 423,829,902,924,333.62/20,756,163.78
  6. Step 6: Final answer
    x = 20,419,471.89

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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.