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Finding the Third Proportional to 15,138 and 16,758

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Solution

The third proportional to 15,138 and 16,758 is: 18,551.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138 : 16,758 = 16,758 : x
  2. Step 2: Convert to fraction form
    15,138/16,758 = 16,758/x
  3. Step 3: Cross multiply
    15,138x = 16,758 × 16,758
  4. Step 4: Simplify right side
    15,138x = 280,830,564
  5. Step 5: Solve for x
    x = 280,830,564/15,138
  6. Step 6: Final answer
    x = 18,551.37

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.