Home / 40,121.15-55,370.28-22,217.81

Finding the Fourth Proportional to 40,121.15, 55,370.28 and 22,217.81

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Solution

The fourth proportional to 40,121.15, 55,370.28 and 22,217.81 is: 30,662.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,121.15 : 55,370.28 = 22,217.81 : x
  2. Step 2: Convert to fraction form
    40,121.15/55,370.28 = 22,217.81/x
  3. Step 3: Cross multiply
    40,121.15x = 55,370.28 × 22,217.81
  4. Step 4: Simplify right side
    40,121.15x = 1,230,206,360.69
  5. Step 5: Solve for x
    x = 1,230,206,360.69/40,121.15
  6. Step 6: Final answer
    x = 30,662.29

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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.