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Finding the Third Proportional to 14,638 and 19,880

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Solution

The third proportional to 14,638 and 19,880 is: 26,999.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,638 : 19,880 = 19,880 : x
  2. Step 2: Convert to fraction form
    14,638/19,880 = 19,880/x
  3. Step 3: Cross multiply
    14,638x = 19,880 × 19,880
  4. Step 4: Simplify right side
    14,638x = 395,214,400
  5. Step 5: Solve for x
    x = 395,214,400/14,638
  6. Step 6: Final answer
    x = 26,999.21

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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.