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Finding the Third Proportional to 13,678 and 19,364

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Solution

The third proportional to 13,678 and 19,364 is: 27,413.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678 : 19,364 = 19,364 : x
  2. Step 2: Convert to fraction form
    13,678/19,364 = 19,364/x
  3. Step 3: Cross multiply
    13,678x = 19,364 × 19,364
  4. Step 4: Simplify right side
    13,678x = 374,964,496
  5. Step 5: Solve for x
    x = 374,964,496/13,678
  6. Step 6: Final answer
    x = 27,413.69

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.