Home / 13,753.38-20,630.86-3,891.83

Finding the Fourth Proportional to 13,753.38, 20,630.86 and 3,891.83

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Solution

The fourth proportional to 13,753.38, 20,630.86 and 3,891.83 is: 5,837.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.38 : 20,630.86 = 3,891.83 : x
  2. Step 2: Convert to fraction form
    13,753.38/20,630.86 = 3,891.83/x
  3. Step 3: Cross multiply
    13,753.38x = 20,630.86 × 3,891.83
  4. Step 4: Simplify right side
    13,753.38x = 80,291,799.87
  5. Step 5: Solve for x
    x = 80,291,799.87/13,753.38
  6. Step 6: Final answer
    x = 5,837.97

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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.