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Finding the Fourth Proportional to 10,957, 15,121.20 and 6,241.72

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Solution

The fourth proportional to 10,957, 15,121.20 and 6,241.72 is: 8,613.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,957 : 15,121.20 = 6,241.72 : x
  2. Step 2: Convert to fraction form
    10,957/15,121.20 = 6,241.72/x
  3. Step 3: Cross multiply
    10,957x = 15,121.20 × 6,241.72
  4. Step 4: Simplify right side
    10,957x = 94,382,296.46
  5. Step 5: Solve for x
    x = 94,382,296.46/10,957
  6. Step 6: Final answer
    x = 8,613.88

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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.