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Finding the Third Proportional to 18,418 and 40,917

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Solution

The third proportional to 18,418 and 40,917 is: 90,900.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418 : 40,917 = 40,917 : x
  2. Step 2: Convert to fraction form
    18,418/40,917 = 40,917/x
  3. Step 3: Cross multiply
    18,418x = 40,917 × 40,917
  4. Step 4: Simplify right side
    18,418x = 1,674,200,889
  5. Step 5: Solve for x
    x = 1,674,200,889/18,418
  6. Step 6: Final answer
    x = 90,900.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.