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Finding the Fourth Proportional to 11,917.80, 17,863.32 and 5,595.78

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Solution

The fourth proportional to 11,917.80, 17,863.32 and 5,595.78 is: 8,387.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,917.80 : 17,863.32 = 5,595.78 : x
  2. Step 2: Convert to fraction form
    11,917.80/17,863.32 = 5,595.78/x
  3. Step 3: Cross multiply
    11,917.80x = 17,863.32 × 5,595.78
  4. Step 4: Simplify right side
    11,917.80x = 99,959,208.79
  5. Step 5: Solve for x
    x = 99,959,208.79/11,917.80
  6. Step 6: Final answer
    x = 8,387.39

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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.