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Finding the Third Proportional to 18,866 and 26,391

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Solution

The third proportional to 18,866 and 26,391 is: 36,917.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,866 : 26,391 = 26,391 : x
  2. Step 2: Convert to fraction form
    18,866/26,391 = 26,391/x
  3. Step 3: Cross multiply
    18,866x = 26,391 × 26,391
  4. Step 4: Simplify right side
    18,866x = 696,484,881
  5. Step 5: Solve for x
    x = 696,484,881/18,866
  6. Step 6: Final answer
    x = 36,917.46

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.