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Finding the Third Proportional to 13,000 and 16,638

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Solution

The third proportional to 13,000 and 16,638 is: 21,294.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,000 : 16,638 = 16,638 : x
  2. Step 2: Convert to fraction form
    13,000/16,638 = 16,638/x
  3. Step 3: Cross multiply
    13,000x = 16,638 × 16,638
  4. Step 4: Simplify right side
    13,000x = 276,823,044
  5. Step 5: Solve for x
    x = 276,823,044/13,000
  6. Step 6: Final answer
    x = 21,294.08

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.