Home / 18,786.90-28,183.60-6,308.13

Finding the Fourth Proportional to 18,786.90, 28,183.60 and 6,308.13

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Solution

The fourth proportional to 18,786.90, 28,183.60 and 6,308.13 is: 9,463.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.90 : 28,183.60 = 6,308.13 : x
  2. Step 2: Convert to fraction form
    18,786.90/28,183.60 = 6,308.13/x
  3. Step 3: Cross multiply
    18,786.90x = 28,183.60 × 6,308.13
  4. Step 4: Simplify right side
    18,786.90x = 177,785,732.23
  5. Step 5: Solve for x
    x = 177,785,732.23/18,786.90
  6. Step 6: Final answer
    x = 9,463.28

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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.