Home / 12,489.20-18,732.09-4,169.03

Finding the Fourth Proportional to 12,489.20, 18,732.09 and 4,169.03

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Solution

The fourth proportional to 12,489.20, 18,732.09 and 4,169.03 is: 6,252.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.20 : 18,732.09 = 4,169.03 : x
  2. Step 2: Convert to fraction form
    12,489.20/18,732.09 = 4,169.03/x
  3. Step 3: Cross multiply
    12,489.20x = 18,732.09 × 4,169.03
  4. Step 4: Simplify right side
    12,489.20x = 78,094,645.17
  5. Step 5: Solve for x
    x = 78,094,645.17/12,489.20
  6. Step 6: Final answer
    x = 6,252.97

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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.