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Finding the Third Proportional to 11,385.56 and 15,519.09

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Solution

The third proportional to 11,385.56 and 15,519.09 is: 21,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.56 : 15,519.09 = 15,519.09 : x
  2. Step 2: Convert to fraction form
    11,385.56/15,519.09 = 15,519.09/x
  3. Step 3: Cross multiply
    11,385.56x = 15,519.09 × 15,519.09
  4. Step 4: Simplify right side
    11,385.56x = 240,842,270.82
  5. Step 5: Solve for x
    x = 240,842,270.82/11,385.56
  6. Step 6: Final answer
    x = 21,153.30

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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.