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Finding the Fourth Proportional to 10,640.54, 15,960.20 and 4,067.39

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Solution

The fourth proportional to 10,640.54, 15,960.20 and 4,067.39 is: 6,100.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640.54 : 15,960.20 = 4,067.39 : x
  2. Step 2: Convert to fraction form
    10,640.54/15,960.20 = 4,067.39/x
  3. Step 3: Cross multiply
    10,640.54x = 15,960.20 × 4,067.39
  4. Step 4: Simplify right side
    10,640.54x = 64,916,332.84
  5. Step 5: Solve for x
    x = 64,916,332.84/10,640.54
  6. Step 6: Final answer
    x = 6,100.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.