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Finding the Fourth Proportional to 12,499.20, 17,250 and 9,349.92

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Solution

The fourth proportional to 12,499.20, 17,250 and 9,349.92 is: 12,903.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,499.20 : 17,250 = 9,349.92 : x
  2. Step 2: Convert to fraction form
    12,499.20/17,250 = 9,349.92/x
  3. Step 3: Cross multiply
    12,499.20x = 17,250 × 9,349.92
  4. Step 4: Simplify right side
    12,499.20x = 161,286,120
  5. Step 5: Solve for x
    x = 161,286,120/12,499.20
  6. Step 6: Final answer
    x = 12,903.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.