Home / 13,745.36-20,604.12-5,431.26

Finding the Fourth Proportional to 13,745.36, 20,604.12 and 5,431.26

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Solution

The fourth proportional to 13,745.36, 20,604.12 and 5,431.26 is: 8,141.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.36 : 20,604.12 = 5,431.26 : x
  2. Step 2: Convert to fraction form
    13,745.36/20,604.12 = 5,431.26/x
  3. Step 3: Cross multiply
    13,745.36x = 20,604.12 × 5,431.26
  4. Step 4: Simplify right side
    13,745.36x = 111,906,332.79
  5. Step 5: Solve for x
    x = 111,906,332.79/13,745.36
  6. Step 6: Final answer
    x = 8,141.39

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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.