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Finding the Third Proportional to 12,281 and 18,774

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Solution

The third proportional to 12,281 and 18,774 is: 28,699.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281 : 18,774 = 18,774 : x
  2. Step 2: Convert to fraction form
    12,281/18,774 = 18,774/x
  3. Step 3: Cross multiply
    12,281x = 18,774 × 18,774
  4. Step 4: Simplify right side
    12,281x = 352,463,076
  5. Step 5: Solve for x
    x = 352,463,076/12,281
  6. Step 6: Final answer
    x = 28,699.87

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.