Home / 20,972.59-31,469.81-8,501.83

Finding the Fourth Proportional to 20,972.59, 31,469.81 and 8,501.83

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Solution

The fourth proportional to 20,972.59, 31,469.81 and 8,501.83 is: 12,757.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.59 : 31,469.81 = 8,501.83 : x
  2. Step 2: Convert to fraction form
    20,972.59/31,469.81 = 8,501.83/x
  3. Step 3: Cross multiply
    20,972.59x = 31,469.81 × 8,501.83
  4. Step 4: Simplify right side
    20,972.59x = 267,550,974.75
  5. Step 5: Solve for x
    x = 267,550,974.75/20,972.59
  6. Step 6: Final answer
    x = 12,757.17

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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.