Home / 12,489.26-18,732.18-4,169.09

Finding the Fourth Proportional to 12,489.26, 18,732.18 and 4,169.09

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Solution

The fourth proportional to 12,489.26, 18,732.18 and 4,169.09 is: 6,253.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.26 : 18,732.18 = 4,169.09 : x
  2. Step 2: Convert to fraction form
    12,489.26/18,732.18 = 4,169.09/x
  3. Step 3: Cross multiply
    12,489.26x = 18,732.18 × 4,169.09
  4. Step 4: Simplify right side
    12,489.26x = 78,096,136.54
  5. Step 5: Solve for x
    x = 78,096,136.54/12,489.26
  6. Step 6: Final answer
    x = 6,253.06

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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.