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Finding the Fourth Proportional to 12,592.53, 18,876.03 and 7,915.83

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Solution

The fourth proportional to 12,592.53, 18,876.03 and 7,915.83 is: 11,865.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,592.53 : 18,876.03 = 7,915.83 : x
  2. Step 2: Convert to fraction form
    12,592.53/18,876.03 = 7,915.83/x
  3. Step 3: Cross multiply
    12,592.53x = 18,876.03 × 7,915.83
  4. Step 4: Simplify right side
    12,592.53x = 149,419,444.55
  5. Step 5: Solve for x
    x = 149,419,444.55/12,592.53
  6. Step 6: Final answer
    x = 11,865.72

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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.