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Finding the Fourth Proportional to 11,375.67, 15,694.11 and 6,897.87

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Solution

The fourth proportional to 11,375.67, 15,694.11 and 6,897.87 is: 9,516.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,375.67 : 15,694.11 = 6,897.87 : x
  2. Step 2: Convert to fraction form
    11,375.67/15,694.11 = 6,897.87/x
  3. Step 3: Cross multiply
    11,375.67x = 15,694.11 × 6,897.87
  4. Step 4: Simplify right side
    11,375.67x = 108,255,930.55
  5. Step 5: Solve for x
    x = 108,255,930.55/11,375.67
  6. Step 6: Final answer
    x = 9,516.44

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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.