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Finding the Third Proportional to 12,728 and 19,272

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Solution

The third proportional to 12,728 and 19,272 is: 29,180.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728 : 19,272 = 19,272 : x
  2. Step 2: Convert to fraction form
    12,728/19,272 = 19,272/x
  3. Step 3: Cross multiply
    12,728x = 19,272 × 19,272
  4. Step 4: Simplify right side
    12,728x = 371,409,984
  5. Step 5: Solve for x
    x = 371,409,984/12,728
  6. Step 6: Final answer
    x = 29,180.55

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.