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Finding the Third Proportional to 18,430 and 27,700

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Solution

The third proportional to 18,430 and 27,700 is: 41,632.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430 : 27,700 = 27,700 : x
  2. Step 2: Convert to fraction form
    18,430/27,700 = 27,700/x
  3. Step 3: Cross multiply
    18,430x = 27,700 × 27,700
  4. Step 4: Simplify right side
    18,430x = 767,290,000
  5. Step 5: Solve for x
    x = 767,290,000/18,430
  6. Step 6: Final answer
    x = 41,632.66

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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.