Home / 20,687.52-28,543.92-11,732.96

Finding the Fourth Proportional to 20,687.52, 28,543.92 and 11,732.96

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Solution

The fourth proportional to 20,687.52, 28,543.92 and 11,732.96 is: 16,188.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.52 : 28,543.92 = 11,732.96 : x
  2. Step 2: Convert to fraction form
    20,687.52/28,543.92 = 11,732.96/x
  3. Step 3: Cross multiply
    20,687.52x = 28,543.92 × 11,732.96
  4. Step 4: Simplify right side
    20,687.52x = 334,904,671.60
  5. Step 5: Solve for x
    x = 334,904,671.60/20,687.52
  6. Step 6: Final answer
    x = 16,188.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.