Home / 18,786.72-28,190.40-6,310.56

Finding the Fourth Proportional to 18,786.72, 28,190.40 and 6,310.56

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Solution

The fourth proportional to 18,786.72, 28,190.40 and 6,310.56 is: 9,469.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.72 : 28,190.40 = 6,310.56 : x
  2. Step 2: Convert to fraction form
    18,786.72/28,190.40 = 6,310.56/x
  3. Step 3: Cross multiply
    18,786.72x = 28,190.40 × 6,310.56
  4. Step 4: Simplify right side
    18,786.72x = 177,897,210.62
  5. Step 5: Solve for x
    x = 177,897,210.62/18,786.72
  6. Step 6: Final answer
    x = 9,469.31

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1.5x scale

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.