Home / 28,839.72-43,198.78-18,304.20

Finding the Fourth Proportional to 28,839.72, 43,198.78 and 18,304.20

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Solution

The fourth proportional to 28,839.72, 43,198.78 and 18,304.20 is: 27,417.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,839.72 : 43,198.78 = 18,304.20 : x
  2. Step 2: Convert to fraction form
    28,839.72/43,198.78 = 18,304.20/x
  3. Step 3: Cross multiply
    28,839.72x = 43,198.78 × 18,304.20
  4. Step 4: Simplify right side
    28,839.72x = 790,719,108.88
  5. Step 5: Solve for x
    x = 790,719,108.88/28,839.72
  6. Step 6: Final answer
    x = 27,417.71

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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.