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Finding the Third Proportional to 15,228 and 21,738

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Solution

The third proportional to 15,228 and 21,738 is: 31,031.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228 : 21,738 = 21,738 : x
  2. Step 2: Convert to fraction form
    15,228/21,738 = 21,738/x
  3. Step 3: Cross multiply
    15,228x = 21,738 × 21,738
  4. Step 4: Simplify right side
    15,228x = 472,540,644
  5. Step 5: Solve for x
    x = 472,540,644/15,228
  6. Step 6: Final answer
    x = 31,031.04

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.