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Finding the Third Proportional to 11,520 and 20,668

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Solution

The third proportional to 11,520 and 20,668 is: 37,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520 : 20,668 = 20,668 : x
  2. Step 2: Convert to fraction form
    11,520/20,668 = 20,668/x
  3. Step 3: Cross multiply
    11,520x = 20,668 × 20,668
  4. Step 4: Simplify right side
    11,520x = 427,166,224
  5. Step 5: Solve for x
    x = 427,166,224/11,520
  6. Step 6: Final answer
    x = 37,080.40

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.