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Finding the Fourth Proportional to 11,893.76, 17,867.98 and 8,391.82

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Solution

The fourth proportional to 11,893.76, 17,867.98 and 8,391.82 is: 12,607.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,893.76 : 17,867.98 = 8,391.82 : x
  2. Step 2: Convert to fraction form
    11,893.76/17,867.98 = 8,391.82/x
  3. Step 3: Cross multiply
    11,893.76x = 17,867.98 × 8,391.82
  4. Step 4: Simplify right side
    11,893.76x = 149,944,871.92
  5. Step 5: Solve for x
    x = 149,944,871.92/11,893.76
  6. Step 6: Final answer
    x = 12,607.02

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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.