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Finding the Third Proportional to 9,622 and 21,430

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Solution

The third proportional to 9,622 and 21,430 is: 47,728.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,622 : 21,430 = 21,430 : x
  2. Step 2: Convert to fraction form
    9,622/21,430 = 21,430/x
  3. Step 3: Cross multiply
    9,622x = 21,430 × 21,430
  4. Step 4: Simplify right side
    9,622x = 459,244,900
  5. Step 5: Solve for x
    x = 459,244,900/9,622
  6. Step 6: Final answer
    x = 47,728.63

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.