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Finding the Third Proportional to 10,367 and 21,209

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Solution

The third proportional to 10,367 and 21,209 is: 43,389.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,367 : 21,209 = 21,209 : x
  2. Step 2: Convert to fraction form
    10,367/21,209 = 21,209/x
  3. Step 3: Cross multiply
    10,367x = 21,209 × 21,209
  4. Step 4: Simplify right side
    10,367x = 449,821,681
  5. Step 5: Solve for x
    x = 449,821,681/10,367
  6. Step 6: Final answer
    x = 43,389.76

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.