Home / 20,454.30-28,227.72-11,501.76

Finding the Fourth Proportional to 20,454.30, 28,227.72 and 11,501.76

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Solution

The fourth proportional to 20,454.30, 28,227.72 and 11,501.76 is: 15,872.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.30 : 28,227.72 = 11,501.76 : x
  2. Step 2: Convert to fraction form
    20,454.30/28,227.72 = 11,501.76/x
  3. Step 3: Cross multiply
    20,454.30x = 28,227.72 × 11,501.76
  4. Step 4: Simplify right side
    20,454.30x = 324,668,460.79
  5. Step 5: Solve for x
    x = 324,668,460.79/20,454.30
  6. Step 6: Final answer
    x = 15,872.87

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Half scale
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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.