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Finding the Third Proportional to 18,180 and 38,557

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Solution

The third proportional to 18,180 and 38,557 is: 81,773.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,180 : 38,557 = 38,557 : x
  2. Step 2: Convert to fraction form
    18,180/38,557 = 38,557/x
  3. Step 3: Cross multiply
    18,180x = 38,557 × 38,557
  4. Step 4: Simplify right side
    18,180x = 1,486,642,249
  5. Step 5: Solve for x
    x = 1,486,642,249/18,180
  6. Step 6: Final answer
    x = 81,773.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.