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Finding the Third Proportional to 12,684 and 19,512

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Solution

The third proportional to 12,684 and 19,512 is: 30,015.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,684 : 19,512 = 19,512 : x
  2. Step 2: Convert to fraction form
    12,684/19,512 = 19,512/x
  3. Step 3: Cross multiply
    12,684x = 19,512 × 19,512
  4. Step 4: Simplify right side
    12,684x = 380,718,144
  5. Step 5: Solve for x
    x = 380,718,144/12,684
  6. Step 6: Final answer
    x = 30,015.62

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.