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Finding the Third Proportional to 6,638 and 14,140

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Solution

The third proportional to 6,638 and 14,140 is: 30,120.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638 : 14,140 = 14,140 : x
  2. Step 2: Convert to fraction form
    6,638/14,140 = 14,140/x
  3. Step 3: Cross multiply
    6,638x = 14,140 × 14,140
  4. Step 4: Simplify right side
    6,638x = 199,939,600
  5. Step 5: Solve for x
    x = 199,939,600/6,638
  6. Step 6: Final answer
    x = 30,120.46

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.