Home / 39,847.80-54,989.97-21,942.77

Finding the Fourth Proportional to 39,847.80, 54,989.97 and 21,942.77

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Solution

The fourth proportional to 39,847.80, 54,989.97 and 21,942.77 is: 30,281.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,847.80 : 54,989.97 = 21,942.77 : x
  2. Step 2: Convert to fraction form
    39,847.80/54,989.97 = 21,942.77/x
  3. Step 3: Cross multiply
    39,847.80x = 54,989.97 × 21,942.77
  4. Step 4: Simplify right side
    39,847.80x = 1,206,631,989.07
  5. Step 5: Solve for x
    x = 1,206,631,989.07/39,847.80
  6. Step 6: Final answer
    x = 30,281.02

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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.