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Finding the Third Proportional to 18,121 and 28,829

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Solution

The third proportional to 18,121 and 28,829 is: 45,864.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121 : 28,829 = 28,829 : x
  2. Step 2: Convert to fraction form
    18,121/28,829 = 28,829/x
  3. Step 3: Cross multiply
    18,121x = 28,829 × 28,829
  4. Step 4: Simplify right side
    18,121x = 831,111,241
  5. Step 5: Solve for x
    x = 831,111,241/18,121
  6. Step 6: Final answer
    x = 45,864.54

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.