Home / 43,781.97-65,649.46-13,790.60

Finding the Fourth Proportional to 43,781.97, 65,649.46 and 13,790.60

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Solution

The fourth proportional to 43,781.97, 65,649.46 and 13,790.60 is: 20,678.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,781.97 : 65,649.46 = 13,790.60 : x
  2. Step 2: Convert to fraction form
    43,781.97/65,649.46 = 13,790.60/x
  3. Step 3: Cross multiply
    43,781.97x = 65,649.46 × 13,790.60
  4. Step 4: Simplify right side
    43,781.97x = 905,345,760.46
  5. Step 5: Solve for x
    x = 905,345,760.46/43,781.97
  6. Step 6: Final answer
    x = 20,678.51

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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.