Home / 12,489.36-18,733.68-3,255.36

Finding the Fourth Proportional to 12,489.36, 18,733.68 and 3,255.36

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Solution

The fourth proportional to 12,489.36, 18,733.68 and 3,255.36 is: 4,882.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.36 : 18,733.68 = 3,255.36 : x
  2. Step 2: Convert to fraction form
    12,489.36/18,733.68 = 3,255.36/x
  3. Step 3: Cross multiply
    12,489.36x = 18,733.68 × 3,255.36
  4. Step 4: Simplify right side
    12,489.36x = 60,984,872.52
  5. Step 5: Solve for x
    x = 60,984,872.52/12,489.36
  6. Step 6: Final answer
    x = 4,882.95

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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.