Home / 13,940.70-20,910.24-11,745.60

Finding the Fourth Proportional to 13,940.70, 20,910.24 and 11,745.60

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Solution

The fourth proportional to 13,940.70, 20,910.24 and 11,745.60 is: 17,617.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.70 : 20,910.24 = 11,745.60 : x
  2. Step 2: Convert to fraction form
    13,940.70/20,910.24 = 11,745.60/x
  3. Step 3: Cross multiply
    13,940.70x = 20,910.24 × 11,745.60
  4. Step 4: Simplify right side
    13,940.70x = 245,603,314.94
  5. Step 5: Solve for x
    x = 245,603,314.94/13,940.70
  6. Step 6: Final answer
    x = 17,617.72

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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.