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Finding the Third Proportional to 7,521.50 and 11,693.56

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Solution

The third proportional to 7,521.50 and 11,693.56 is: 18,179.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,521.50 : 11,693.56 = 11,693.56 : x
  2. Step 2: Convert to fraction form
    7,521.50/11,693.56 = 11,693.56/x
  3. Step 3: Cross multiply
    7,521.50x = 11,693.56 × 11,693.56
  4. Step 4: Simplify right side
    7,521.50x = 136,739,403.94
  5. Step 5: Solve for x
    x = 136,739,403.94/7,521.50
  6. Step 6: Final answer
    x = 18,179.81

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.