Home / 20,757.20-31,134.92-9,660.06

Finding the Fourth Proportional to 20,757.20, 31,134.92 and 9,660.06

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Solution

The fourth proportional to 20,757.20, 31,134.92 and 9,660.06 is: 14,489.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.20 : 31,134.92 = 9,660.06 : x
  2. Step 2: Convert to fraction form
    20,757.20/31,134.92 = 9,660.06/x
  3. Step 3: Cross multiply
    20,757.20x = 31,134.92 × 9,660.06
  4. Step 4: Simplify right side
    20,757.20x = 300,765,146.99
  5. Step 5: Solve for x
    x = 300,765,146.99/20,757.20
  6. Step 6: Final answer
    x = 14,489.68

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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.