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Finding the Third Proportional to 11,700 and 25,861

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Solution

The third proportional to 11,700 and 25,861 is: 57,161.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,700 : 25,861 = 25,861 : x
  2. Step 2: Convert to fraction form
    11,700/25,861 = 25,861/x
  3. Step 3: Cross multiply
    11,700x = 25,861 × 25,861
  4. Step 4: Simplify right side
    11,700x = 668,791,321
  5. Step 5: Solve for x
    x = 668,791,321/11,700
  6. Step 6: Final answer
    x = 57,161.65

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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.