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Finding the Fourth Proportional to 11,771.31, 17,656.97 and 4,375.61

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Solution

The fourth proportional to 11,771.31, 17,656.97 and 4,375.61 is: 6,563.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,771.31 : 17,656.97 = 4,375.61 : x
  2. Step 2: Convert to fraction form
    11,771.31/17,656.97 = 4,375.61/x
  3. Step 3: Cross multiply
    11,771.31x = 17,656.97 × 4,375.61
  4. Step 4: Simplify right side
    11,771.31x = 77,259,904.34
  5. Step 5: Solve for x
    x = 77,259,904.34/11,771.31
  6. Step 6: Final answer
    x = 6,563.41

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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.