Home / 11,001.92-15,180-6,221.96

Finding the Fourth Proportional to 11,001.92, 15,180 and 6,221.96

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Solution

The fourth proportional to 11,001.92, 15,180 and 6,221.96 is: 8,584.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,001.92 : 15,180 = 6,221.96 : x
  2. Step 2: Convert to fraction form
    11,001.92/15,180 = 6,221.96/x
  3. Step 3: Cross multiply
    11,001.92x = 15,180 × 6,221.96
  4. Step 4: Simplify right side
    11,001.92x = 94,449,276.90
  5. Step 5: Solve for x
    x = 94,449,276.90/11,001.92
  6. Step 6: Final answer
    x = 8,584.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.