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Finding the Third Proportional to 9,790 and 21,176

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Solution

The third proportional to 9,790 and 21,176 is: 45,804.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,790 : 21,176 = 21,176 : x
  2. Step 2: Convert to fraction form
    9,790/21,176 = 21,176/x
  3. Step 3: Cross multiply
    9,790x = 21,176 × 21,176
  4. Step 4: Simplify right side
    9,790x = 448,422,976
  5. Step 5: Solve for x
    x = 448,422,976/9,790
  6. Step 6: Final answer
    x = 45,804.19

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.