Home / 30,340.20-41,857.20-18,399.18

Finding the Fourth Proportional to 30,340.20, 41,857.20 and 18,399.18

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Solution

The fourth proportional to 30,340.20, 41,857.20 and 18,399.18 is: 25,383.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,340.20 : 41,857.20 = 18,399.18 : x
  2. Step 2: Convert to fraction form
    30,340.20/41,857.20 = 18,399.18/x
  3. Step 3: Cross multiply
    30,340.20x = 41,857.20 × 18,399.18
  4. Step 4: Simplify right side
    30,340.20x = 770,138,157.10
  5. Step 5: Solve for x
    x = 770,138,157.10/30,340.20
  6. Step 6: Final answer
    x = 25,383.42

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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.