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Finding the Fourth Proportional to 11,149.65, 15,375.03 and 7,791.24

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Solution

The fourth proportional to 11,149.65, 15,375.03 and 7,791.24 is: 10,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,149.65 : 15,375.03 = 7,791.24 : x
  2. Step 2: Convert to fraction form
    11,149.65/15,375.03 = 7,791.24/x
  3. Step 3: Cross multiply
    11,149.65x = 15,375.03 × 7,791.24
  4. Step 4: Simplify right side
    11,149.65x = 119,790,548.74
  5. Step 5: Solve for x
    x = 119,790,548.74/11,149.65
  6. Step 6: Final answer
    x = 10,743.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.