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Finding the Fourth Proportional to 17,115.30, 25,672.95 and 12,507.30

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Solution

The fourth proportional to 17,115.30, 25,672.95 and 12,507.30 is: 18,760.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,115.30 : 25,672.95 = 12,507.30 : x
  2. Step 2: Convert to fraction form
    17,115.30/25,672.95 = 12,507.30/x
  3. Step 3: Cross multiply
    17,115.30x = 25,672.95 × 12,507.30
  4. Step 4: Simplify right side
    17,115.30x = 321,099,287.54
  5. Step 5: Solve for x
    x = 321,099,287.54/17,115.30
  6. Step 6: Final answer
    x = 18,760.95

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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.