Home / 40,778.97-61,157.38-11,189.80

Finding the Fourth Proportional to 40,778.97, 61,157.38 and 11,189.80

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Solution

The fourth proportional to 40,778.97, 61,157.38 and 11,189.80 is: 16,781.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,778.97 : 61,157.38 = 11,189.80 : x
  2. Step 2: Convert to fraction form
    40,778.97/61,157.38 = 11,189.80/x
  3. Step 3: Cross multiply
    40,778.97x = 61,157.38 × 11,189.80
  4. Step 4: Simplify right side
    40,778.97x = 684,338,850.72
  5. Step 5: Solve for x
    x = 684,338,850.72/40,778.97
  6. Step 6: Final answer
    x = 16,781.66

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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.