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Finding the Third Proportional to 18,312 and 27,357

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Solution

The third proportional to 18,312 and 27,357 is: 40,869.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312 : 27,357 = 27,357 : x
  2. Step 2: Convert to fraction form
    18,312/27,357 = 27,357/x
  3. Step 3: Cross multiply
    18,312x = 27,357 × 27,357
  4. Step 4: Simplify right side
    18,312x = 748,405,449
  5. Step 5: Solve for x
    x = 748,405,449/18,312
  6. Step 6: Final answer
    x = 40,869.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.