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Finding the Fourth Proportional to 16,638, 22,960.44 and 9,186

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Solution

The fourth proportional to 16,638, 22,960.44 and 9,186 is: 12,676.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,638 : 22,960.44 = 9,186 : x
  2. Step 2: Convert to fraction form
    16,638/22,960.44 = 9,186/x
  3. Step 3: Cross multiply
    16,638x = 22,960.44 × 9,186
  4. Step 4: Simplify right side
    16,638x = 210,914,601.84
  5. Step 5: Solve for x
    x = 210,914,601.84/16,638
  6. Step 6: Final answer
    x = 12,676.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.