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Finding the Third Proportional to 8,939.53 and 19,629.28

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Solution

The third proportional to 8,939.53 and 19,629.28 is: 43,101.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.53 : 19,629.28 = 19,629.28 : x
  2. Step 2: Convert to fraction form
    8,939.53/19,629.28 = 19,629.28/x
  3. Step 3: Cross multiply
    8,939.53x = 19,629.28 × 19,629.28
  4. Step 4: Simplify right side
    8,939.53x = 385,308,682.39
  5. Step 5: Solve for x
    x = 385,308,682.39/8,939.53
  6. Step 6: Final answer
    x = 43,101.67

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.