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Finding the Third Proportional to 10,620 and 22,505

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Solution

The third proportional to 10,620 and 22,505 is: 47,690.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620 : 22,505 = 22,505 : x
  2. Step 2: Convert to fraction form
    10,620/22,505 = 22,505/x
  3. Step 3: Cross multiply
    10,620x = 22,505 × 22,505
  4. Step 4: Simplify right side
    10,620x = 506,475,025
  5. Step 5: Solve for x
    x = 506,475,025/10,620
  6. Step 6: Final answer
    x = 47,690.68

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.