Home / 20,629.32-30,943.90-7,481.67

Finding the Fourth Proportional to 20,629.32, 30,943.90 and 7,481.67

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Solution

The fourth proportional to 20,629.32, 30,943.90 and 7,481.67 is: 11,222.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.32 : 30,943.90 = 7,481.67 : x
  2. Step 2: Convert to fraction form
    20,629.32/30,943.90 = 7,481.67/x
  3. Step 3: Cross multiply
    20,629.32x = 30,943.90 × 7,481.67
  4. Step 4: Simplify right side
    20,629.32x = 231,512,048.31
  5. Step 5: Solve for x
    x = 231,512,048.31/20,629.32
  6. Step 6: Final answer
    x = 11,222.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.