Home / 28,780.75-43,169.15-17,689.15

Finding the Fourth Proportional to 28,780.75, 43,169.15 and 17,689.15

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Solution

The fourth proportional to 28,780.75, 43,169.15 and 17,689.15 is: 26,532.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.75 : 43,169.15 = 17,689.15 : x
  2. Step 2: Convert to fraction form
    28,780.75/43,169.15 = 17,689.15/x
  3. Step 3: Cross multiply
    28,780.75x = 43,169.15 × 17,689.15
  4. Step 4: Simplify right side
    28,780.75x = 763,625,481.28
  5. Step 5: Solve for x
    x = 763,625,481.28/28,780.75
  6. Step 6: Final answer
    x = 26,532.51

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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.