Home / 39,847.78-54,989.96-21,942.73

Finding the Fourth Proportional to 39,847.78, 54,989.96 and 21,942.73

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Solution

The fourth proportional to 39,847.78, 54,989.96 and 21,942.73 is: 30,280.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,847.78 : 54,989.96 = 21,942.73 : x
  2. Step 2: Convert to fraction form
    39,847.78/54,989.96 = 21,942.73/x
  3. Step 3: Cross multiply
    39,847.78x = 54,989.96 × 21,942.73
  4. Step 4: Simplify right side
    39,847.78x = 1,206,629,804.01
  5. Step 5: Solve for x
    x = 1,206,629,804.01/39,847.78
  6. Step 6: Final answer
    x = 30,280.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.