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Finding the Third Proportional to 6,615 and 13,780.13

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Solution

The third proportional to 6,615 and 13,780.13 is: 28,706.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615 : 13,780.13 = 13,780.13 : x
  2. Step 2: Convert to fraction form
    6,615/13,780.13 = 13,780.13/x
  3. Step 3: Cross multiply
    6,615x = 13,780.13 × 13,780.13
  4. Step 4: Simplify right side
    6,615x = 189,891,845.02
  5. Step 5: Solve for x
    x = 189,891,845.02/6,615
  6. Step 6: Final answer
    x = 28,706.25

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.