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Finding the Third Proportional to 18,989 and 41,553

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Solution

The third proportional to 18,989 and 41,553 is: 90,929.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989 : 41,553 = 41,553 : x
  2. Step 2: Convert to fraction form
    18,989/41,553 = 41,553/x
  3. Step 3: Cross multiply
    18,989x = 41,553 × 41,553
  4. Step 4: Simplify right side
    18,989x = 1,726,651,809
  5. Step 5: Solve for x
    x = 1,726,651,809/18,989
  6. Step 6: Final answer
    x = 90,929.05

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.