Home / 12,239.28-18,359.82-3,474.90

Finding the Fourth Proportional to 12,239.28, 18,359.82 and 3,474.90

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Solution

The fourth proportional to 12,239.28, 18,359.82 and 3,474.90 is: 5,212.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.28 : 18,359.82 = 3,474.90 : x
  2. Step 2: Convert to fraction form
    12,239.28/18,359.82 = 3,474.90/x
  3. Step 3: Cross multiply
    12,239.28x = 18,359.82 × 3,474.90
  4. Step 4: Simplify right side
    12,239.28x = 63,798,538.52
  5. Step 5: Solve for x
    x = 63,798,538.52/12,239.28
  6. Step 6: Final answer
    x = 5,212.61

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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.