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Finding the Third Proportional to 21,492 and 47,372

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Solution

The third proportional to 21,492 and 47,372 is: 104,415.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,492 : 47,372 = 47,372 : x
  2. Step 2: Convert to fraction form
    21,492/47,372 = 47,372/x
  3. Step 3: Cross multiply
    21,492x = 47,372 × 47,372
  4. Step 4: Simplify right side
    21,492x = 2,244,106,384
  5. Step 5: Solve for x
    x = 2,244,106,384/21,492
  6. Step 6: Final answer
    x = 104,415.89

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.