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Finding the Third Proportional to 9,656 and 21,328

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Solution

The third proportional to 9,656 and 21,328 is: 47,108.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,656 : 21,328 = 21,328 : x
  2. Step 2: Convert to fraction form
    9,656/21,328 = 21,328/x
  3. Step 3: Cross multiply
    9,656x = 21,328 × 21,328
  4. Step 4: Simplify right side
    9,656x = 454,883,584
  5. Step 5: Solve for x
    x = 454,883,584/9,656
  6. Step 6: Final answer
    x = 47,108.90

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.