Home / 11,961.45-17,942.31-4,170.33

Finding the Fourth Proportional to 11,961.45, 17,942.31 and 4,170.33

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Solution

The fourth proportional to 11,961.45, 17,942.31 and 4,170.33 is: 6,255.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,961.45 : 17,942.31 = 4,170.33 : x
  2. Step 2: Convert to fraction form
    11,961.45/17,942.31 = 4,170.33/x
  3. Step 3: Cross multiply
    11,961.45x = 17,942.31 × 4,170.33
  4. Step 4: Simplify right side
    11,961.45x = 74,825,353.66
  5. Step 5: Solve for x
    x = 74,825,353.66/11,961.45
  6. Step 6: Final answer
    x = 6,255.54

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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.