Home / 20,958.42-31,441.52-6,919.43

Finding the Fourth Proportional to 20,958.42, 31,441.52 and 6,919.43

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Solution

The fourth proportional to 20,958.42, 31,441.52 and 6,919.43 is: 10,380.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.42 : 31,441.52 = 6,919.43 : x
  2. Step 2: Convert to fraction form
    20,958.42/31,441.52 = 6,919.43/x
  3. Step 3: Cross multiply
    20,958.42x = 31,441.52 × 6,919.43
  4. Step 4: Simplify right side
    20,958.42x = 217,557,396.73
  5. Step 5: Solve for x
    x = 217,557,396.73/20,958.42
  6. Step 6: Final answer
    x = 10,380.43

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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.