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Finding the Third Proportional to 9,621 and 20,679.75

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Solution

The third proportional to 9,621 and 20,679.75 is: 44,449.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621 : 20,679.75 = 20,679.75 : x
  2. Step 2: Convert to fraction form
    9,621/20,679.75 = 20,679.75/x
  3. Step 3: Cross multiply
    9,621x = 20,679.75 × 20,679.75
  4. Step 4: Simplify right side
    9,621x = 427,652,060.06
  5. Step 5: Solve for x
    x = 427,652,060.06/9,621
  6. Step 6: Final answer
    x = 44,449.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.