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Finding the Third Proportional to 12,426 and 18,759

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Solution

The third proportional to 12,426 and 18,759 is: 28,319.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426 : 18,759 = 18,759 : x
  2. Step 2: Convert to fraction form
    12,426/18,759 = 18,759/x
  3. Step 3: Cross multiply
    12,426x = 18,759 × 18,759
  4. Step 4: Simplify right side
    12,426x = 351,900,081
  5. Step 5: Solve for x
    x = 351,900,081/12,426
  6. Step 6: Final answer
    x = 28,319.66

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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.