Home / 39,942.92-55,121.55-22,039.20

Finding the Fourth Proportional to 39,942.92, 55,121.55 and 22,039.20

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Solution

The fourth proportional to 39,942.92, 55,121.55 and 22,039.20 is: 30,414.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,942.92 : 55,121.55 = 22,039.20 : x
  2. Step 2: Convert to fraction form
    39,942.92/55,121.55 = 22,039.20/x
  3. Step 3: Cross multiply
    39,942.92x = 55,121.55 × 22,039.20
  4. Step 4: Simplify right side
    39,942.92x = 1,214,834,864.76
  5. Step 5: Solve for x
    x = 1,214,834,864.76/39,942.92
  6. Step 6: Final answer
    x = 30,414.27

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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.