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Finding the Third Proportional to 8,630.81 and 18,908.63

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Solution

The third proportional to 8,630.81 and 18,908.63 is: 41,425.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.81 : 18,908.63 = 18,908.63 : x
  2. Step 2: Convert to fraction form
    8,630.81/18,908.63 = 18,908.63/x
  3. Step 3: Cross multiply
    8,630.81x = 18,908.63 × 18,908.63
  4. Step 4: Simplify right side
    8,630.81x = 357,536,099.39
  5. Step 5: Solve for x
    x = 357,536,099.39/8,630.81
  6. Step 6: Final answer
    x = 41,425.54

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.