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Finding the Third Proportional to 9,966 and 21,146.75

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Solution

The third proportional to 9,966 and 21,146.75 is: 44,871.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,966 : 21,146.75 = 21,146.75 : x
  2. Step 2: Convert to fraction form
    9,966/21,146.75 = 21,146.75/x
  3. Step 3: Cross multiply
    9,966x = 21,146.75 × 21,146.75
  4. Step 4: Simplify right side
    9,966x = 447,185,035.56
  5. Step 5: Solve for x
    x = 447,185,035.56/9,966
  6. Step 6: Final answer
    x = 44,871.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.