Home / 12,180.16-18,270.60-4,786.48

Finding the Fourth Proportional to 12,180.16, 18,270.60 and 4,786.48

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Solution

The fourth proportional to 12,180.16, 18,270.60 and 4,786.48 is: 7,179.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.16 : 18,270.60 = 4,786.48 : x
  2. Step 2: Convert to fraction form
    12,180.16/18,270.60 = 4,786.48/x
  3. Step 3: Cross multiply
    12,180.16x = 18,270.60 × 4,786.48
  4. Step 4: Simplify right side
    12,180.16x = 87,451,861.49
  5. Step 5: Solve for x
    x = 87,451,861.49/12,180.16
  6. Step 6: Final answer
    x = 7,179.86

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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.