Home / 20,964.44-31,439.97-6,921.84

Finding the Fourth Proportional to 20,964.44, 31,439.97 and 6,921.84

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Solution

The fourth proportional to 20,964.44, 31,439.97 and 6,921.84 is: 10,380.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.44 : 31,439.97 = 6,921.84 : x
  2. Step 2: Convert to fraction form
    20,964.44/31,439.97 = 6,921.84/x
  3. Step 3: Cross multiply
    20,964.44x = 31,439.97 × 6,921.84
  4. Step 4: Simplify right side
    20,964.44x = 217,622,441.94
  5. Step 5: Solve for x
    x = 217,622,441.94/20,964.44
  6. Step 6: Final answer
    x = 10,380.55

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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.