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Finding the Third Proportional to 18,451 and 38,216

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Solution

The third proportional to 18,451 and 38,216 is: 79,153.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,451 : 38,216 = 38,216 : x
  2. Step 2: Convert to fraction form
    18,451/38,216 = 38,216/x
  3. Step 3: Cross multiply
    18,451x = 38,216 × 38,216
  4. Step 4: Simplify right side
    18,451x = 1,460,462,656
  5. Step 5: Solve for x
    x = 1,460,462,656/18,451
  6. Step 6: Final answer
    x = 79,153.58

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.