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Finding the Third Proportional to 14,920 and 17,272

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Solution

The third proportional to 14,920 and 17,272 is: 19,994.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920 : 17,272 = 17,272 : x
  2. Step 2: Convert to fraction form
    14,920/17,272 = 17,272/x
  3. Step 3: Cross multiply
    14,920x = 17,272 × 17,272
  4. Step 4: Simplify right side
    14,920x = 298,321,984
  5. Step 5: Solve for x
    x = 298,321,984/14,920
  6. Step 6: Final answer
    x = 19,994.77

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.