Home / 40,309.12-55,621.44-22,401.28

Finding the Fourth Proportional to 40,309.12, 55,621.44 and 22,401.28

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Solution

The fourth proportional to 40,309.12, 55,621.44 and 22,401.28 is: 30,910.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,309.12 : 55,621.44 = 22,401.28 : x
  2. Step 2: Convert to fraction form
    40,309.12/55,621.44 = 22,401.28/x
  3. Step 3: Cross multiply
    40,309.12x = 55,621.44 × 22,401.28
  4. Step 4: Simplify right side
    40,309.12x = 1,245,991,451.44
  5. Step 5: Solve for x
    x = 1,245,991,451.44/40,309.12
  6. Step 6: Final answer
    x = 30,910.91

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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.