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Finding the Third Proportional to 20,880 and 43,484

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Solution

The third proportional to 20,880 and 43,484 is: 90,558.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880 : 43,484 = 43,484 : x
  2. Step 2: Convert to fraction form
    20,880/43,484 = 43,484/x
  3. Step 3: Cross multiply
    20,880x = 43,484 × 43,484
  4. Step 4: Simplify right side
    20,880x = 1,890,858,256
  5. Step 5: Solve for x
    x = 1,890,858,256/20,880
  6. Step 6: Final answer
    x = 90,558.35

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.