Home / 28,974.80-43,449.40-13,397.20

Finding the Fourth Proportional to 28,974.80, 43,449.40 and 13,397.20

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Solution

The fourth proportional to 28,974.80, 43,449.40 and 13,397.20 is: 20,089.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,974.80 : 43,449.40 = 13,397.20 : x
  2. Step 2: Convert to fraction form
    28,974.80/43,449.40 = 13,397.20/x
  3. Step 3: Cross multiply
    28,974.80x = 43,449.40 × 13,397.20
  4. Step 4: Simplify right side
    28,974.80x = 582,100,301.68
  5. Step 5: Solve for x
    x = 582,100,301.68/28,974.80
  6. Step 6: Final answer
    x = 20,089.88

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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.