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Finding the Third Proportional to 18,709 and 26,686

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Solution

The third proportional to 18,709 and 26,686 is: 38,064.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709 : 26,686 = 26,686 : x
  2. Step 2: Convert to fraction form
    18,709/26,686 = 26,686/x
  3. Step 3: Cross multiply
    18,709x = 26,686 × 26,686
  4. Step 4: Simplify right side
    18,709x = 712,142,596
  5. Step 5: Solve for x
    x = 712,142,596/18,709
  6. Step 6: Final answer
    x = 38,064.17

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.