Home / 11,961.92-17,972.16-11,298.80

Finding the Fourth Proportional to 11,961.92, 17,972.16 and 11,298.80

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Solution

The fourth proportional to 11,961.92, 17,972.16 and 11,298.80 is: 16,975.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,961.92 : 17,972.16 = 11,298.80 : x
  2. Step 2: Convert to fraction form
    11,961.92/17,972.16 = 11,298.80/x
  3. Step 3: Cross multiply
    11,961.92x = 17,972.16 × 11,298.80
  4. Step 4: Simplify right side
    11,961.92x = 203,063,841.41
  5. Step 5: Solve for x
    x = 203,063,841.41/11,961.92
  6. Step 6: Final answer
    x = 16,975.86

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1.5x scale

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.