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Finding the Third Proportional to 20,149 and 28,855

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Solution

The third proportional to 20,149 and 28,855 is: 41,322.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149 : 28,855 = 28,855 : x
  2. Step 2: Convert to fraction form
    20,149/28,855 = 28,855/x
  3. Step 3: Cross multiply
    20,149x = 28,855 × 28,855
  4. Step 4: Simplify right side
    20,149x = 832,611,025
  5. Step 5: Solve for x
    x = 832,611,025/20,149
  6. Step 6: Final answer
    x = 41,322.70

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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.