Home / 20,872.44-31,311.58-6,833.56

Finding the Fourth Proportional to 20,872.44, 31,311.58 and 6,833.56

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Solution

The fourth proportional to 20,872.44, 31,311.58 and 6,833.56 is: 10,251.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.44 : 31,311.58 = 6,833.56 : x
  2. Step 2: Convert to fraction form
    20,872.44/31,311.58 = 6,833.56/x
  3. Step 3: Cross multiply
    20,872.44x = 31,311.58 × 6,833.56
  4. Step 4: Simplify right side
    20,872.44x = 213,969,560.62
  5. Step 5: Solve for x
    x = 213,969,560.62/20,872.44
  6. Step 6: Final answer
    x = 10,251.30

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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.