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Finding the Third Proportional to 19,878 and 26,373

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Solution

The third proportional to 19,878 and 26,373 is: 34,990.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878 : 26,373 = 26,373 : x
  2. Step 2: Convert to fraction form
    19,878/26,373 = 26,373/x
  3. Step 3: Cross multiply
    19,878x = 26,373 × 26,373
  4. Step 4: Simplify right side
    19,878x = 695,535,129
  5. Step 5: Solve for x
    x = 695,535,129/19,878
  6. Step 6: Final answer
    x = 34,990.20

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.