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Finding the Third Proportional to 18,821.50 and 40,924

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Solution

The third proportional to 18,821.50 and 40,924 is: 88,981.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.50 : 40,924 = 40,924 : x
  2. Step 2: Convert to fraction form
    18,821.50/40,924 = 40,924/x
  3. Step 3: Cross multiply
    18,821.50x = 40,924 × 40,924
  4. Step 4: Simplify right side
    18,821.50x = 1,674,773,776
  5. Step 5: Solve for x
    x = 1,674,773,776/18,821.50
  6. Step 6: Final answer
    x = 88,981.95

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.