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Finding the Third Proportional to 6,690.94 and 9,939.38

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Solution

The third proportional to 6,690.94 and 9,939.38 is: 14,764.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,690.94 : 9,939.38 = 9,939.38 : x
  2. Step 2: Convert to fraction form
    6,690.94/9,939.38 = 9,939.38/x
  3. Step 3: Cross multiply
    6,690.94x = 9,939.38 × 9,939.38
  4. Step 4: Simplify right side
    6,690.94x = 98,791,175.39
  5. Step 5: Solve for x
    x = 98,791,175.39/6,690.94
  6. Step 6: Final answer
    x = 14,764.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.