Home / 20,958.30-31,441.33-6,919.31

Finding the Fourth Proportional to 20,958.30, 31,441.33 and 6,919.31

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Solution

The fourth proportional to 20,958.30, 31,441.33 and 6,919.31 is: 10,380.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.30 : 31,441.33 = 6,919.31 : x
  2. Step 2: Convert to fraction form
    20,958.30/31,441.33 = 6,919.31/x
  3. Step 3: Cross multiply
    20,958.30x = 31,441.33 × 6,919.31
  4. Step 4: Simplify right side
    20,958.30x = 217,552,151.88
  5. Step 5: Solve for x
    x = 217,552,151.88/20,958.30
  6. Step 6: Final answer
    x = 10,380.24

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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.