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Finding the Third Proportional to 21,266 and 28,867

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Solution

The third proportional to 21,266 and 28,867 is: 39,184.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266 : 28,867 = 28,867 : x
  2. Step 2: Convert to fraction form
    21,266/28,867 = 28,867/x
  3. Step 3: Cross multiply
    21,266x = 28,867 × 28,867
  4. Step 4: Simplify right side
    21,266x = 833,303,689
  5. Step 5: Solve for x
    x = 833,303,689/21,266
  6. Step 6: Final answer
    x = 39,184.79

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.