Home / 38,439.26-57,658.55-12,144.00

Finding the Fourth Proportional to 38,439.26, 57,658.55 and 12,144.00

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Solution

The fourth proportional to 38,439.26, 57,658.55 and 12,144.00 is: 18,215.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,439.26 : 57,658.55 = 12,144.00 : x
  2. Step 2: Convert to fraction form
    38,439.26/57,658.55 = 12,144.00/x
  3. Step 3: Cross multiply
    38,439.26x = 57,658.55 × 12,144.00
  4. Step 4: Simplify right side
    38,439.26x = 700,205,441.61
  5. Step 5: Solve for x
    x = 700,205,441.61/38,439.26
  6. Step 6: Final answer
    x = 18,215.89

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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.