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Finding the Third Proportional to 9,999 and 21,582

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Solution

The third proportional to 9,999 and 21,582 is: 46,582.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999 : 21,582 = 21,582 : x
  2. Step 2: Convert to fraction form
    9,999/21,582 = 21,582/x
  3. Step 3: Cross multiply
    9,999x = 21,582 × 21,582
  4. Step 4: Simplify right side
    9,999x = 465,782,724
  5. Step 5: Solve for x
    x = 465,782,724/9,999
  6. Step 6: Final answer
    x = 46,582.93

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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.