Home / 13,778.39-20,667.29-4,418.44

Finding the Fourth Proportional to 13,778.39, 20,667.29 and 4,418.44

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Solution

The fourth proportional to 13,778.39, 20,667.29 and 4,418.44 is: 6,627.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.39 : 20,667.29 = 4,418.44 : x
  2. Step 2: Convert to fraction form
    13,778.39/20,667.29 = 4,418.44/x
  3. Step 3: Cross multiply
    13,778.39x = 20,667.29 × 4,418.44
  4. Step 4: Simplify right side
    13,778.39x = 91,317,107.07
  5. Step 5: Solve for x
    x = 91,317,107.07/13,778.39
  6. Step 6: Final answer
    x = 6,627.56

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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.