Home / 18,117.92-27,177.30-11,917.52

Finding the Fourth Proportional to 18,117.92, 27,177.30 and 11,917.52

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Solution

The fourth proportional to 18,117.92, 27,177.30 and 11,917.52 is: 17,876.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.92 : 27,177.30 = 11,917.52 : x
  2. Step 2: Convert to fraction form
    18,117.92/27,177.30 = 11,917.52/x
  3. Step 3: Cross multiply
    18,117.92x = 27,177.30 × 11,917.52
  4. Step 4: Simplify right side
    18,117.92x = 323,886,016.30
  5. Step 5: Solve for x
    x = 323,886,016.30/18,117.92
  6. Step 6: Final answer
    x = 17,876.56

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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.