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Finding the Fourth Proportional to 40,425.98, 60,647.85 and 11,960.71

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Solution

The fourth proportional to 40,425.98, 60,647.85 and 11,960.71 is: 17,943.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,425.98 : 60,647.85 = 11,960.71 : x
  2. Step 2: Convert to fraction form
    40,425.98/60,647.85 = 11,960.71/x
  3. Step 3: Cross multiply
    40,425.98x = 60,647.85 × 11,960.71
  4. Step 4: Simplify right side
    40,425.98x = 725,391,345.97
  5. Step 5: Solve for x
    x = 725,391,345.97/40,425.98
  6. Step 6: Final answer
    x = 17,943.69

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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.