Home / 30,331.60-41,857.68-18,391.84

Finding the Fourth Proportional to 30,331.60, 41,857.68 and 18,391.84

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Solution

The fourth proportional to 30,331.60, 41,857.68 and 18,391.84 is: 25,380.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,331.60 : 41,857.68 = 18,391.84 : x
  2. Step 2: Convert to fraction form
    30,331.60/41,857.68 = 18,391.84/x
  3. Step 3: Cross multiply
    30,331.60x = 41,857.68 × 18,391.84
  4. Step 4: Simplify right side
    30,331.60x = 769,839,753.33
  5. Step 5: Solve for x
    x = 769,839,753.33/30,331.60
  6. Step 6: Final answer
    x = 25,380.78

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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.