Home / 11,919.56-17,871.44-5,680.54

Finding the Fourth Proportional to 11,919.56, 17,871.44 and 5,680.54

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Solution

The fourth proportional to 11,919.56, 17,871.44 and 5,680.54 is: 8,517.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.56 : 17,871.44 = 5,680.54 : x
  2. Step 2: Convert to fraction form
    11,919.56/17,871.44 = 5,680.54/x
  3. Step 3: Cross multiply
    11,919.56x = 17,871.44 × 5,680.54
  4. Step 4: Simplify right side
    11,919.56x = 101,519,399.30
  5. Step 5: Solve for x
    x = 101,519,399.30/11,919.56
  6. Step 6: Final answer
    x = 8,517.04

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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.