Home / 26,286.88-39,361.20-20,135.20

Finding the Fourth Proportional to 26,286.88, 39,361.20 and 20,135.20

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Solution

The fourth proportional to 26,286.88, 39,361.20 and 20,135.20 is: 30,149.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,286.88 : 39,361.20 = 20,135.20 : x
  2. Step 2: Convert to fraction form
    26,286.88/39,361.20 = 20,135.20/x
  3. Step 3: Cross multiply
    26,286.88x = 39,361.20 × 20,135.20
  4. Step 4: Simplify right side
    26,286.88x = 792,545,634.24
  5. Step 5: Solve for x
    x = 792,545,634.24/26,286.88
  6. Step 6: Final answer
    x = 30,149.86

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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.