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Finding the Third Proportional to 9,811 and 21,259

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Solution

The third proportional to 9,811 and 21,259 is: 46,065.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,811 : 21,259 = 21,259 : x
  2. Step 2: Convert to fraction form
    9,811/21,259 = 21,259/x
  3. Step 3: Cross multiply
    9,811x = 21,259 × 21,259
  4. Step 4: Simplify right side
    9,811x = 451,945,081
  5. Step 5: Solve for x
    x = 451,945,081/9,811
  6. Step 6: Final answer
    x = 46,065.14

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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.