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Finding the Fourth Proportional to 18,606.28, 27,910.62 and 8,218

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Solution

The fourth proportional to 18,606.28, 27,910.62 and 8,218 is: 12,327.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.28 : 27,910.62 = 8,218 : x
  2. Step 2: Convert to fraction form
    18,606.28/27,910.62 = 8,218/x
  3. Step 3: Cross multiply
    18,606.28x = 27,910.62 × 8,218
  4. Step 4: Simplify right side
    18,606.28x = 229,369,475.16
  5. Step 5: Solve for x
    x = 229,369,475.16/18,606.28
  6. Step 6: Final answer
    x = 12,327.53

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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.