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Finding the Fourth Proportional to 22,659.88, 33,989.82 and 8,812.12

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Solution

The fourth proportional to 22,659.88, 33,989.82 and 8,812.12 is: 13,218.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,659.88 : 33,989.82 = 8,812.12 : x
  2. Step 2: Convert to fraction form
    22,659.88/33,989.82 = 8,812.12/x
  3. Step 3: Cross multiply
    22,659.88x = 33,989.82 × 8,812.12
  4. Step 4: Simplify right side
    22,659.88x = 299,522,372.62
  5. Step 5: Solve for x
    x = 299,522,372.62/22,659.88
  6. Step 6: Final answer
    x = 13,218.18

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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.