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Finding the Third Proportional to 9,925 and 21,621

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Solution

The third proportional to 9,925 and 21,621 is: 47,100.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,925 : 21,621 = 21,621 : x
  2. Step 2: Convert to fraction form
    9,925/21,621 = 21,621/x
  3. Step 3: Cross multiply
    9,925x = 21,621 × 21,621
  4. Step 4: Simplify right side
    9,925x = 467,467,641
  5. Step 5: Solve for x
    x = 467,467,641/9,925
  6. Step 6: Final answer
    x = 47,100.01

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.