Home / 39,955.68-55,138.38-22,050.78

Finding the Fourth Proportional to 39,955.68, 55,138.38 and 22,050.78

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Solution

The fourth proportional to 39,955.68, 55,138.38 and 22,050.78 is: 30,429.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,955.68 : 55,138.38 = 22,050.78 : x
  2. Step 2: Convert to fraction form
    39,955.68/55,138.38 = 22,050.78/x
  3. Step 3: Cross multiply
    39,955.68x = 55,138.38 × 22,050.78
  4. Step 4: Simplify right side
    39,955.68x = 1,215,844,286.94
  5. Step 5: Solve for x
    x = 1,215,844,286.94/39,955.68
  6. Step 6: Final answer
    x = 30,429.82

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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.