Home / 20,844.38-31,257.12-7,687.46

Finding the Fourth Proportional to 20,844.38, 31,257.12 and 7,687.46

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Solution

The fourth proportional to 20,844.38, 31,257.12 and 7,687.46 is: 11,527.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.38 : 31,257.12 = 7,687.46 : x
  2. Step 2: Convert to fraction form
    20,844.38/31,257.12 = 7,687.46/x
  3. Step 3: Cross multiply
    20,844.38x = 31,257.12 × 7,687.46
  4. Step 4: Simplify right side
    20,844.38x = 240,287,859.72
  5. Step 5: Solve for x
    x = 240,287,859.72/20,844.38
  6. Step 6: Final answer
    x = 11,527.70

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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.