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Finding the Fourth Proportional to 41,991.89, 62,991.14 and 13,910.81

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Solution

The fourth proportional to 41,991.89, 62,991.14 and 13,910.81 is: 20,867.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,991.89 : 62,991.14 = 13,910.81 : x
  2. Step 2: Convert to fraction form
    41,991.89/62,991.14 = 13,910.81/x
  3. Step 3: Cross multiply
    41,991.89x = 62,991.14 × 13,910.81
  4. Step 4: Simplify right side
    41,991.89x = 876,257,395.71
  5. Step 5: Solve for x
    x = 876,257,395.71/41,991.89
  6. Step 6: Final answer
    x = 20,867.30

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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.