Home / 43,839.20-65,785.80-18,891.20

Finding the Fourth Proportional to 43,839.20, 65,785.80 and 18,891.20

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Solution

The fourth proportional to 43,839.20, 65,785.80 and 18,891.20 is: 28,348.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,839.20 : 65,785.80 = 18,891.20 : x
  2. Step 2: Convert to fraction form
    43,839.20/65,785.80 = 18,891.20/x
  3. Step 3: Cross multiply
    43,839.20x = 65,785.80 × 18,891.20
  4. Step 4: Simplify right side
    43,839.20x = 1,242,772,704.96
  5. Step 5: Solve for x
    x = 1,242,772,704.96/43,839.20
  6. Step 6: Final answer
    x = 28,348.43

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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.