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Finding the Third Proportional to 8,890 and 13,764

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Solution

The third proportional to 8,890 and 13,764 is: 21,310.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,890 : 13,764 = 13,764 : x
  2. Step 2: Convert to fraction form
    8,890/13,764 = 13,764/x
  3. Step 3: Cross multiply
    8,890x = 13,764 × 13,764
  4. Step 4: Simplify right side
    8,890x = 189,447,696
  5. Step 5: Solve for x
    x = 189,447,696/8,890
  6. Step 6: Final answer
    x = 21,310.20

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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.