Home / 20,849.97-28,765.82-11,891.03

Finding the Fourth Proportional to 20,849.97, 28,765.82 and 11,891.03

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Solution

The fourth proportional to 20,849.97, 28,765.82 and 11,891.03 is: 16,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.97 : 28,765.82 = 11,891.03 : x
  2. Step 2: Convert to fraction form
    20,849.97/28,765.82 = 11,891.03/x
  3. Step 3: Cross multiply
    20,849.97x = 28,765.82 × 11,891.03
  4. Step 4: Simplify right side
    20,849.97x = 342,055,169.14
  5. Step 5: Solve for x
    x = 342,055,169.14/20,849.97
  6. Step 6: Final answer
    x = 16,405.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.