Home / 21,286.20-31,934.82-10,201.44

Finding the Fourth Proportional to 21,286.20, 31,934.82 and 10,201.44

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Solution

The fourth proportional to 21,286.20, 31,934.82 and 10,201.44 is: 15,304.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.20 : 31,934.82 = 10,201.44 : x
  2. Step 2: Convert to fraction form
    21,286.20/31,934.82 = 10,201.44/x
  3. Step 3: Cross multiply
    21,286.20x = 31,934.82 × 10,201.44
  4. Step 4: Simplify right side
    21,286.20x = 325,781,150.14
  5. Step 5: Solve for x
    x = 325,781,150.14/21,286.20
  6. Step 6: Final answer
    x = 15,304.81

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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.