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Finding the Fourth Proportional to 13,882.87, 20,829.44 and 6,489.73

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Solution

The fourth proportional to 13,882.87, 20,829.44 and 6,489.73 is: 9,737.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,882.87 : 20,829.44 = 6,489.73 : x
  2. Step 2: Convert to fraction form
    13,882.87/20,829.44 = 6,489.73/x
  3. Step 3: Cross multiply
    13,882.87x = 20,829.44 × 6,489.73
  4. Step 4: Simplify right side
    13,882.87x = 135,177,441.65
  5. Step 5: Solve for x
    x = 135,177,441.65/13,882.87
  6. Step 6: Final answer
    x = 9,737.00

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1.5x scale

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.