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Finding the Fourth Proportional to 11,893.98, 17,839.05 and 3,687.90

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Solution

The fourth proportional to 11,893.98, 17,839.05 and 3,687.90 is: 5,531.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,893.98 : 17,839.05 = 3,687.90 : x
  2. Step 2: Convert to fraction form
    11,893.98/17,839.05 = 3,687.90/x
  3. Step 3: Cross multiply
    11,893.98x = 17,839.05 × 3,687.90
  4. Step 4: Simplify right side
    11,893.98x = 65,788,632.50
  5. Step 5: Solve for x
    x = 65,788,632.50/11,893.98
  6. Step 6: Final answer
    x = 5,531.25

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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.