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Finding the Fourth Proportional to 22,138.10, 33,207.15 and 8,999.90

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Solution

The fourth proportional to 22,138.10, 33,207.15 and 8,999.90 is: 13,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,138.10 : 33,207.15 = 8,999.90 : x
  2. Step 2: Convert to fraction form
    22,138.10/33,207.15 = 8,999.90/x
  3. Step 3: Cross multiply
    22,138.10x = 33,207.15 × 8,999.90
  4. Step 4: Simplify right side
    22,138.10x = 298,861,029.29
  5. Step 5: Solve for x
    x = 298,861,029.29/22,138.10
  6. Step 6: Final answer
    x = 13,499.85

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.