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Finding the Third Proportional to 6,615 and 15,990.75

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Solution

The third proportional to 6,615 and 15,990.75 is: 38,655.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615 : 15,990.75 = 15,990.75 : x
  2. Step 2: Convert to fraction form
    6,615/15,990.75 = 15,990.75/x
  3. Step 3: Cross multiply
    6,615x = 15,990.75 × 15,990.75
  4. Step 4: Simplify right side
    6,615x = 255,704,085.56
  5. Step 5: Solve for x
    x = 255,704,085.56/6,615
  6. Step 6: Final answer
    x = 38,655.19

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.