Home / 36,517.78-54,765.72-13,138.75

Finding the Fourth Proportional to 36,517.78, 54,765.72 and 13,138.75

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Solution

The fourth proportional to 36,517.78, 54,765.72 and 13,138.75 is: 19,704.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,517.78 : 54,765.72 = 13,138.75 : x
  2. Step 2: Convert to fraction form
    36,517.78/54,765.72 = 13,138.75/x
  3. Step 3: Cross multiply
    36,517.78x = 54,765.72 × 13,138.75
  4. Step 4: Simplify right side
    36,517.78x = 719,553,103.65
  5. Step 5: Solve for x
    x = 719,553,103.65/36,517.78
  6. Step 6: Final answer
    x = 19,704.19

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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.