Home / 13,520.38-18,657.91-7,552.13

Finding the Fourth Proportional to 13,520.38, 18,657.91 and 7,552.13

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Solution

The fourth proportional to 13,520.38, 18,657.91 and 7,552.13 is: 10,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.38 : 18,657.91 = 7,552.13 : x
  2. Step 2: Convert to fraction form
    13,520.38/18,657.91 = 7,552.13/x
  3. Step 3: Cross multiply
    13,520.38x = 18,657.91 × 7,552.13
  4. Step 4: Simplify right side
    13,520.38x = 140,906,961.85
  5. Step 5: Solve for x
    x = 140,906,961.85/13,520.38
  6. Step 6: Final answer
    x = 10,421.82

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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.