Home / 12,270.24-18,415.86-4,879.90

Finding the Fourth Proportional to 12,270.24, 18,415.86 and 4,879.90

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Solution

The fourth proportional to 12,270.24, 18,415.86 and 4,879.90 is: 7,324.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,270.24 : 18,415.86 = 4,879.90 : x
  2. Step 2: Convert to fraction form
    12,270.24/18,415.86 = 4,879.90/x
  3. Step 3: Cross multiply
    12,270.24x = 18,415.86 × 4,879.90
  4. Step 4: Simplify right side
    12,270.24x = 89,867,555.21
  5. Step 5: Solve for x
    x = 89,867,555.21/12,270.24
  6. Step 6: Final answer
    x = 7,324.03

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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.