Home / 12,531.52-18,791.62-3,764.72

Finding the Fourth Proportional to 12,531.52, 18,791.62 and 3,764.72

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Solution

The fourth proportional to 12,531.52, 18,791.62 and 3,764.72 is: 5,645.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.52 : 18,791.62 = 3,764.72 : x
  2. Step 2: Convert to fraction form
    12,531.52/18,791.62 = 3,764.72/x
  3. Step 3: Cross multiply
    12,531.52x = 18,791.62 × 3,764.72
  4. Step 4: Simplify right side
    12,531.52x = 70,745,187.65
  5. Step 5: Solve for x
    x = 70,745,187.65/12,531.52
  6. Step 6: Final answer
    x = 5,645.38

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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.