Home / 40,028.18-55,238.34-22,122.72

Finding the Fourth Proportional to 40,028.18, 55,238.34 and 22,122.72

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Solution

The fourth proportional to 40,028.18, 55,238.34 and 22,122.72 is: 30,529.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,028.18 : 55,238.34 = 22,122.72 : x
  2. Step 2: Convert to fraction form
    40,028.18/55,238.34 = 22,122.72/x
  3. Step 3: Cross multiply
    40,028.18x = 55,238.34 × 22,122.72
  4. Step 4: Simplify right side
    40,028.18x = 1,222,022,329.08
  5. Step 5: Solve for x
    x = 1,222,022,329.08/40,028.18
  6. Step 6: Final answer
    x = 30,529.05

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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.