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Finding the Fourth Proportional to 11,086.88, 16,634.88 and 8,140.37

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Solution

The fourth proportional to 11,086.88, 16,634.88 and 8,140.37 is: 12,213.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,086.88 : 16,634.88 = 8,140.37 : x
  2. Step 2: Convert to fraction form
    11,086.88/16,634.88 = 8,140.37/x
  3. Step 3: Cross multiply
    11,086.88x = 16,634.88 × 8,140.37
  4. Step 4: Simplify right side
    11,086.88x = 135,413,994.93
  5. Step 5: Solve for x
    x = 135,413,994.93/11,086.88
  6. Step 6: Final answer
    x = 12,213.90

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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.