Home / 13,960.20-20,933.10-5,190.60

Finding the Fourth Proportional to 13,960.20, 20,933.10 and 5,190.60

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Solution

The fourth proportional to 13,960.20, 20,933.10 and 5,190.60 is: 7,783.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,960.20 : 20,933.10 = 5,190.60 : x
  2. Step 2: Convert to fraction form
    13,960.20/20,933.10 = 5,190.60/x
  3. Step 3: Cross multiply
    13,960.20x = 20,933.10 × 5,190.60
  4. Step 4: Simplify right side
    13,960.20x = 108,655,348.86
  5. Step 5: Solve for x
    x = 108,655,348.86/13,960.20
  6. Step 6: Final answer
    x = 7,783.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.