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Finding the Third Proportional to 12,418 and 18,726

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Solution

The third proportional to 12,418 and 18,726 is: 28,238.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,418 : 18,726 = 18,726 : x
  2. Step 2: Convert to fraction form
    12,418/18,726 = 18,726/x
  3. Step 3: Cross multiply
    12,418x = 18,726 × 18,726
  4. Step 4: Simplify right side
    12,418x = 350,663,076
  5. Step 5: Solve for x
    x = 350,663,076/12,418
  6. Step 6: Final answer
    x = 28,238.29

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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.