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Finding the Third Proportional to 20,087 and 28,695

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Solution

The third proportional to 20,087 and 28,695 is: 40,991.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087 : 28,695 = 28,695 : x
  2. Step 2: Convert to fraction form
    20,087/28,695 = 28,695/x
  3. Step 3: Cross multiply
    20,087x = 28,695 × 28,695
  4. Step 4: Simplify right side
    20,087x = 823,403,025
  5. Step 5: Solve for x
    x = 823,403,025/20,087
  6. Step 6: Final answer
    x = 40,991.84

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.