Home / 18,540.28-25,581.18-11,272.15

Finding the Fourth Proportional to 18,540.28, 25,581.18 and 11,272.15

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Solution

The fourth proportional to 18,540.28, 25,581.18 and 11,272.15 is: 15,552.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,540.28 : 25,581.18 = 11,272.15 : x
  2. Step 2: Convert to fraction form
    18,540.28/25,581.18 = 11,272.15/x
  3. Step 3: Cross multiply
    18,540.28x = 25,581.18 × 11,272.15
  4. Step 4: Simplify right side
    18,540.28x = 288,354,898.14
  5. Step 5: Solve for x
    x = 288,354,898.14/18,540.28
  6. Step 6: Final answer
    x = 15,552.89

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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.