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Finding the Fourth Proportional to 10,957.78, 15,120.93 and 6,241.90

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Solution

The fourth proportional to 10,957.78, 15,120.93 and 6,241.90 is: 8,613.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,957.78 : 15,120.93 = 6,241.90 : x
  2. Step 2: Convert to fraction form
    10,957.78/15,120.93 = 6,241.90/x
  3. Step 3: Cross multiply
    10,957.78x = 15,120.93 × 6,241.90
  4. Step 4: Simplify right side
    10,957.78x = 94,383,332.97
  5. Step 5: Solve for x
    x = 94,383,332.97/10,957.78
  6. Step 6: Final answer
    x = 8,613.36

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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.