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Finding the Fourth Proportional to 13,993.25, 20,991.41 and 4,629.85

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Solution

The fourth proportional to 13,993.25, 20,991.41 and 4,629.85 is: 6,945.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,993.25 : 20,991.41 = 4,629.85 : x
  2. Step 2: Convert to fraction form
    13,993.25/20,991.41 = 4,629.85/x
  3. Step 3: Cross multiply
    13,993.25x = 20,991.41 × 4,629.85
  4. Step 4: Simplify right side
    13,993.25x = 97,187,079.59
  5. Step 5: Solve for x
    x = 97,187,079.59/13,993.25
  6. Step 6: Final answer
    x = 6,945.28

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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.