Home / 20,448.45-30,672.57-5,455.54

Finding the Fourth Proportional to 20,448.45, 30,672.57 and 5,455.54

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Solution

The fourth proportional to 20,448.45, 30,672.57 and 5,455.54 is: 8,183.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.45 : 30,672.57 = 5,455.54 : x
  2. Step 2: Convert to fraction form
    20,448.45/30,672.57 = 5,455.54/x
  3. Step 3: Cross multiply
    20,448.45x = 30,672.57 × 5,455.54
  4. Step 4: Simplify right side
    20,448.45x = 167,335,318.80
  5. Step 5: Solve for x
    x = 167,335,318.80/20,448.45
  6. Step 6: Final answer
    x = 8,183.28

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1.5x scale

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.