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Finding the Third Proportional to 9,318 and 18,900

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Solution

The third proportional to 9,318 and 18,900 is: 38,335.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318 : 18,900 = 18,900 : x
  2. Step 2: Convert to fraction form
    9,318/18,900 = 18,900/x
  3. Step 3: Cross multiply
    9,318x = 18,900 × 18,900
  4. Step 4: Simplify right side
    9,318x = 357,210,000
  5. Step 5: Solve for x
    x = 357,210,000/9,318
  6. Step 6: Final answer
    x = 38,335.48

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.