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Finding the Third Proportional to 18,700 and 28,098

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Solution

The third proportional to 18,700 and 28,098 is: 42,219.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,700 : 28,098 = 28,098 : x
  2. Step 2: Convert to fraction form
    18,700/28,098 = 28,098/x
  3. Step 3: Cross multiply
    18,700x = 28,098 × 28,098
  4. Step 4: Simplify right side
    18,700x = 789,497,604
  5. Step 5: Solve for x
    x = 789,497,604/18,700
  6. Step 6: Final answer
    x = 42,219.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.