Home / 18,221.82-25,147.20-11,149.62

Finding the Fourth Proportional to 18,221.82, 25,147.20 and 11,149.62

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Solution

The fourth proportional to 18,221.82, 25,147.20 and 11,149.62 is: 15,387.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.82 : 25,147.20 = 11,149.62 : x
  2. Step 2: Convert to fraction form
    18,221.82/25,147.20 = 11,149.62/x
  3. Step 3: Cross multiply
    18,221.82x = 25,147.20 × 11,149.62
  4. Step 4: Simplify right side
    18,221.82x = 280,381,724.06
  5. Step 5: Solve for x
    x = 280,381,724.06/18,221.82
  6. Step 6: Final answer
    x = 15,387.14

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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.