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Finding the Fourth Proportional to 36,915.28, 55,372.92 and 9,213.28

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Solution

The fourth proportional to 36,915.28, 55,372.92 and 9,213.28 is: 13,819.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,915.28 : 55,372.92 = 9,213.28 : x
  2. Step 2: Convert to fraction form
    36,915.28/55,372.92 = 9,213.28/x
  3. Step 3: Cross multiply
    36,915.28x = 55,372.92 × 9,213.28
  4. Step 4: Simplify right side
    36,915.28x = 510,166,216.38
  5. Step 5: Solve for x
    x = 510,166,216.38/36,915.28
  6. Step 6: Final answer
    x = 13,819.92

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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.