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Finding the Fourth Proportional to 11,141.76, 15,375.15 and 6,662.87

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Solution

The fourth proportional to 11,141.76, 15,375.15 and 6,662.87 is: 9,194.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,141.76 : 15,375.15 = 6,662.87 : x
  2. Step 2: Convert to fraction form
    11,141.76/15,375.15 = 6,662.87/x
  3. Step 3: Cross multiply
    11,141.76x = 15,375.15 × 6,662.87
  4. Step 4: Simplify right side
    11,141.76x = 102,442,548.80
  5. Step 5: Solve for x
    x = 102,442,548.80/11,141.76
  6. Step 6: Final answer
    x = 9,194.47

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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.