Home / 20,454.91-28,227.20-11,502.18

Finding the Fourth Proportional to 20,454.91, 28,227.20 and 11,502.18

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Solution

The fourth proportional to 20,454.91, 28,227.20 and 11,502.18 is: 15,872.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.91 : 28,227.20 = 11,502.18 : x
  2. Step 2: Convert to fraction form
    20,454.91/28,227.20 = 11,502.18/x
  3. Step 3: Cross multiply
    20,454.91x = 28,227.20 × 11,502.18
  4. Step 4: Simplify right side
    20,454.91x = 324,674,335.30
  5. Step 5: Solve for x
    x = 324,674,335.30/20,454.91
  6. Step 6: Final answer
    x = 15,872.68

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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.