Home / 21,123,195.70-31,684,793.55-13,564,923.70

Finding the Fourth Proportional to 21,123,195.70, 31,684,793.55 and 13,564,923.70

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Solution

The fourth proportional to 21,123,195.70, 31,684,793.55 and 13,564,923.70 is: 20,347,385.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123,195.70 : 31,684,793.55 = 13,564,923.70 : x
  2. Step 2: Convert to fraction form
    21,123,195.70/31,684,793.55 = 13,564,923.70/x
  3. Step 3: Cross multiply
    21,123,195.70x = 31,684,793.55 × 13,564,923.70
  4. Step 4: Simplify right side
    21,123,195.70x = 429,801,806,956,002.12
  5. Step 5: Solve for x
    x = 429,801,806,956,002.12/21,123,195.70
  6. Step 6: Final answer
    x = 20,347,385.55

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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.