Home / 11,910.78-17,974.25-11,513.75

Finding the Fourth Proportional to 11,910.78, 17,974.25 and 11,513.75

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Solution

The fourth proportional to 11,910.78, 17,974.25 and 11,513.75 is: 17,375.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,910.78 : 17,974.25 = 11,513.75 : x
  2. Step 2: Convert to fraction form
    11,910.78/17,974.25 = 11,513.75/x
  3. Step 3: Cross multiply
    11,910.78x = 17,974.25 × 11,513.75
  4. Step 4: Simplify right side
    11,910.78x = 206,950,873.50
  5. Step 5: Solve for x
    x = 206,950,873.50/11,910.78
  6. Step 6: Final answer
    x = 17,375.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.