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Finding the Fourth Proportional to 11,841.26, 17,781.98 and 7,917.75

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Solution

The fourth proportional to 11,841.26, 17,781.98 and 7,917.75 is: 11,890.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,841.26 : 17,781.98 = 7,917.75 : x
  2. Step 2: Convert to fraction form
    11,841.26/17,781.98 = 7,917.75/x
  3. Step 3: Cross multiply
    11,841.26x = 17,781.98 × 7,917.75
  4. Step 4: Simplify right side
    11,841.26x = 140,793,232.56
  5. Step 5: Solve for x
    x = 140,793,232.56/11,841.26
  6. Step 6: Final answer
    x = 11,890.06

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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.