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Finding the Third Proportional to 12,318 and 14,748

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Solution

The third proportional to 12,318 and 14,748 is: 17,657.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318 : 14,748 = 14,748 : x
  2. Step 2: Convert to fraction form
    12,318/14,748 = 14,748/x
  3. Step 3: Cross multiply
    12,318x = 14,748 × 14,748
  4. Step 4: Simplify right side
    12,318x = 217,503,504
  5. Step 5: Solve for x
    x = 217,503,504/12,318
  6. Step 6: Final answer
    x = 17,657.37

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Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.