Home / 20,742.04-28,624.50-11,311.24

Finding the Fourth Proportional to 20,742.04, 28,624.50 and 11,311.24

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Solution

The fourth proportional to 20,742.04, 28,624.50 and 11,311.24 is: 15,609.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.04 : 28,624.50 = 11,311.24 : x
  2. Step 2: Convert to fraction form
    20,742.04/28,624.50 = 11,311.24/x
  3. Step 3: Cross multiply
    20,742.04x = 28,624.50 × 11,311.24
  4. Step 4: Simplify right side
    20,742.04x = 323,778,589.38
  5. Step 5: Solve for x
    x = 323,778,589.38/20,742.04
  6. Step 6: Final answer
    x = 15,609.78

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Half scale
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Double scale
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Similar ratio
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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.