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Finding the Third Proportional to 12,784 and 18,806

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Solution

The third proportional to 12,784 and 18,806 is: 27,664.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,784 : 18,806 = 18,806 : x
  2. Step 2: Convert to fraction form
    12,784/18,806 = 18,806/x
  3. Step 3: Cross multiply
    12,784x = 18,806 × 18,806
  4. Step 4: Simplify right side
    12,784x = 353,665,636
  5. Step 5: Solve for x
    x = 353,665,636/12,784
  6. Step 6: Final answer
    x = 27,664.71

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.