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Finding the Third Proportional to 15,286 and 16,726

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Solution

The third proportional to 15,286 and 16,726 is: 18,301.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286 : 16,726 = 16,726 : x
  2. Step 2: Convert to fraction form
    15,286/16,726 = 16,726/x
  3. Step 3: Cross multiply
    15,286x = 16,726 × 16,726
  4. Step 4: Simplify right side
    15,286x = 279,759,076
  5. Step 5: Solve for x
    x = 279,759,076/15,286
  6. Step 6: Final answer
    x = 18,301.65

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.