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Finding the Third Proportional to 9,090 and 19,966

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Solution

The third proportional to 9,090 and 19,966 is: 43,854.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,090 : 19,966 = 19,966 : x
  2. Step 2: Convert to fraction form
    9,090/19,966 = 19,966/x
  3. Step 3: Cross multiply
    9,090x = 19,966 × 19,966
  4. Step 4: Simplify right side
    9,090x = 398,641,156
  5. Step 5: Solve for x
    x = 398,641,156/9,090
  6. Step 6: Final answer
    x = 43,854.91

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.