Home / 20,758.38-28,645.76-11,326.95

Finding the Fourth Proportional to 20,758.38, 28,645.76 and 11,326.95

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Solution

The fourth proportional to 20,758.38, 28,645.76 and 11,326.95 is: 15,630.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.38 : 28,645.76 = 11,326.95 : x
  2. Step 2: Convert to fraction form
    20,758.38/28,645.76 = 11,326.95/x
  3. Step 3: Cross multiply
    20,758.38x = 28,645.76 × 11,326.95
  4. Step 4: Simplify right side
    20,758.38x = 324,469,034.60
  5. Step 5: Solve for x
    x = 324,469,034.60/20,758.38
  6. Step 6: Final answer
    x = 15,630.75

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1.5x scale

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.