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Finding the Fourth Proportional to 11,755.95, 17,634.05 and 2,990.87

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Solution

The fourth proportional to 11,755.95, 17,634.05 and 2,990.87 is: 4,486.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,755.95 : 17,634.05 = 2,990.87 : x
  2. Step 2: Convert to fraction form
    11,755.95/17,634.05 = 2,990.87/x
  3. Step 3: Cross multiply
    11,755.95x = 17,634.05 × 2,990.87
  4. Step 4: Simplify right side
    11,755.95x = 52,741,151.12
  5. Step 5: Solve for x
    x = 52,741,151.12/11,755.95
  6. Step 6: Final answer
    x = 4,486.34

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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.