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Finding the Third Proportional to 12,861 and 27,258

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Solution

The third proportional to 12,861 and 27,258 is: 57,771.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861 : 27,258 = 27,258 : x
  2. Step 2: Convert to fraction form
    12,861/27,258 = 27,258/x
  3. Step 3: Cross multiply
    12,861x = 27,258 × 27,258
  4. Step 4: Simplify right side
    12,861x = 742,998,564
  5. Step 5: Solve for x
    x = 742,998,564/12,861
  6. Step 6: Final answer
    x = 57,771.45

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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.