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Finding the Third Proportional to 8,751 and 20,643

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Solution

The third proportional to 8,751 and 20,643 is: 48,695.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751 : 20,643 = 20,643 : x
  2. Step 2: Convert to fraction form
    8,751/20,643 = 20,643/x
  3. Step 3: Cross multiply
    8,751x = 20,643 × 20,643
  4. Step 4: Simplify right side
    8,751x = 426,133,449
  5. Step 5: Solve for x
    x = 426,133,449/8,751
  6. Step 6: Final answer
    x = 48,695.40

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.