Home / 11,745.20-17,617.70-2,979.99

Finding the Fourth Proportional to 11,745.20, 17,617.70 and 2,979.99

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Solution

The fourth proportional to 11,745.20, 17,617.70 and 2,979.99 is: 4,469.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.20 : 17,617.70 = 2,979.99 : x
  2. Step 2: Convert to fraction form
    11,745.20/17,617.70 = 2,979.99/x
  3. Step 3: Cross multiply
    11,745.20x = 17,617.70 × 2,979.99
  4. Step 4: Simplify right side
    11,745.20x = 52,500,577.27
  5. Step 5: Solve for x
    x = 52,500,577.27/11,745.20
  6. Step 6: Final answer
    x = 4,469.96

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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.