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Finding the Third Proportional to 15,449.63 and 20,986.88

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Solution

The third proportional to 15,449.63 and 20,986.88 is: 28,508.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.63 : 20,986.88 = 20,986.88 : x
  2. Step 2: Convert to fraction form
    15,449.63/20,986.88 = 20,986.88/x
  3. Step 3: Cross multiply
    15,449.63x = 20,986.88 × 20,986.88
  4. Step 4: Simplify right side
    15,449.63x = 440,448,922.27
  5. Step 5: Solve for x
    x = 440,448,922.27/15,449.63
  6. Step 6: Final answer
    x = 28,508.71

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.