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Finding the Third Proportional to 15,318 and 22,690

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Solution

The third proportional to 15,318 and 22,690 is: 33,609.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318 : 22,690 = 22,690 : x
  2. Step 2: Convert to fraction form
    15,318/22,690 = 22,690/x
  3. Step 3: Cross multiply
    15,318x = 22,690 × 22,690
  4. Step 4: Simplify right side
    15,318x = 514,836,100
  5. Step 5: Solve for x
    x = 514,836,100/15,318
  6. Step 6: Final answer
    x = 33,609.88

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.