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Finding the Third Proportional to 10,218 and 13,629

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Solution

The third proportional to 10,218 and 13,629 is: 18,178.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218 : 13,629 = 13,629 : x
  2. Step 2: Convert to fraction form
    10,218/13,629 = 13,629/x
  3. Step 3: Cross multiply
    10,218x = 13,629 × 13,629
  4. Step 4: Simplify right side
    10,218x = 185,749,641
  5. Step 5: Solve for x
    x = 185,749,641/10,218
  6. Step 6: Final answer
    x = 18,178.67

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.