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Finding the Fourth Proportional to 41,991.87, 62,991.15 and 13,910.79

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Solution

The fourth proportional to 41,991.87, 62,991.15 and 13,910.79 is: 20,867.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,991.87 : 62,991.15 = 13,910.79 : x
  2. Step 2: Convert to fraction form
    41,991.87/62,991.15 = 13,910.79/x
  3. Step 3: Cross multiply
    41,991.87x = 62,991.15 × 13,910.79
  4. Step 4: Simplify right side
    41,991.87x = 876,256,659.51
  5. Step 5: Solve for x
    x = 876,256,659.51/41,991.87
  6. Step 6: Final answer
    x = 20,867.29

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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.