Home / 11,939.32-17,912.22-4,148.56

Finding the Fourth Proportional to 11,939.32, 17,912.22 and 4,148.56

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Solution

The fourth proportional to 11,939.32, 17,912.22 and 4,148.56 is: 6,223.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.32 : 17,912.22 = 4,148.56 : x
  2. Step 2: Convert to fraction form
    11,939.32/17,912.22 = 4,148.56/x
  3. Step 3: Cross multiply
    11,939.32x = 17,912.22 × 4,148.56
  4. Step 4: Simplify right side
    11,939.32x = 74,309,919.40
  5. Step 5: Solve for x
    x = 74,309,919.40/11,939.32
  6. Step 6: Final answer
    x = 6,223.97

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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.