Home / 21,286.44-31,928.45-8,132.85

Finding the Fourth Proportional to 21,286.44, 31,928.45 and 8,132.85

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Solution

The fourth proportional to 21,286.44, 31,928.45 and 8,132.85 is: 12,198.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.44 : 31,928.45 = 8,132.85 : x
  2. Step 2: Convert to fraction form
    21,286.44/31,928.45 = 8,132.85/x
  3. Step 3: Cross multiply
    21,286.44x = 31,928.45 × 8,132.85
  4. Step 4: Simplify right side
    21,286.44x = 259,669,253.92
  5. Step 5: Solve for x
    x = 259,669,253.92/21,286.44
  6. Step 6: Final answer
    x = 12,198.81

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1.5x scale

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.