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Finding the Third Proportional to 13,626 and 21,106

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Solution

The third proportional to 13,626 and 21,106 is: 32,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626 : 21,106 = 21,106 : x
  2. Step 2: Convert to fraction form
    13,626/21,106 = 21,106/x
  3. Step 3: Cross multiply
    13,626x = 21,106 × 21,106
  4. Step 4: Simplify right side
    13,626x = 445,463,236
  5. Step 5: Solve for x
    x = 445,463,236/13,626
  6. Step 6: Final answer
    x = 32,692.15

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.