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Finding the Third Proportional to 6,569.50 and 9,990.75

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Solution

The third proportional to 6,569.50 and 9,990.75 is: 15,193.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,569.50 : 9,990.75 = 9,990.75 : x
  2. Step 2: Convert to fraction form
    6,569.50/9,990.75 = 9,990.75/x
  3. Step 3: Cross multiply
    6,569.50x = 9,990.75 × 9,990.75
  4. Step 4: Simplify right side
    6,569.50x = 99,815,085.56
  5. Step 5: Solve for x
    x = 99,815,085.56/6,569.50
  6. Step 6: Final answer
    x = 15,193.71

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.