Home / 20,472.39-28,251.57-11,519.88

Finding the Fourth Proportional to 20,472.39, 28,251.57 and 11,519.88

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Solution

The fourth proportional to 20,472.39, 28,251.57 and 11,519.88 is: 15,897.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.39 : 28,251.57 = 11,519.88 : x
  2. Step 2: Convert to fraction form
    20,472.39/28,251.57 = 11,519.88/x
  3. Step 3: Cross multiply
    20,472.39x = 28,251.57 × 11,519.88
  4. Step 4: Simplify right side
    20,472.39x = 325,454,696.21
  5. Step 5: Solve for x
    x = 325,454,696.21/20,472.39
  6. Step 6: Final answer
    x = 15,897.25

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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.