Home / 13,631.97-20,448.39-3,771.33

Finding the Fourth Proportional to 13,631.97, 20,448.39 and 3,771.33

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Solution

The fourth proportional to 13,631.97, 20,448.39 and 3,771.33 is: 5,657.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.97 : 20,448.39 = 3,771.33 : x
  2. Step 2: Convert to fraction form
    13,631.97/20,448.39 = 3,771.33/x
  3. Step 3: Cross multiply
    13,631.97x = 20,448.39 × 3,771.33
  4. Step 4: Simplify right side
    13,631.97x = 77,117,626.66
  5. Step 5: Solve for x
    x = 77,117,626.66/13,631.97
  6. Step 6: Final answer
    x = 5,657.12

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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.