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Finding the Third Proportional to 8,644.50 and 21,165.75

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Solution

The third proportional to 8,644.50 and 21,165.75 is: 51,823.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,644.50 : 21,165.75 = 21,165.75 : x
  2. Step 2: Convert to fraction form
    8,644.50/21,165.75 = 21,165.75/x
  3. Step 3: Cross multiply
    8,644.50x = 21,165.75 × 21,165.75
  4. Step 4: Simplify right side
    8,644.50x = 447,988,973.06
  5. Step 5: Solve for x
    x = 447,988,973.06/8,644.50
  6. Step 6: Final answer
    x = 51,823.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.