Home / 13,804.82-20,707.91-3,945.54

Finding the Fourth Proportional to 13,804.82, 20,707.91 and 3,945.54

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Solution

The fourth proportional to 13,804.82, 20,707.91 and 3,945.54 is: 5,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,804.82 : 20,707.91 = 3,945.54 : x
  2. Step 2: Convert to fraction form
    13,804.82/20,707.91 = 3,945.54/x
  3. Step 3: Cross multiply
    13,804.82x = 20,707.91 × 3,945.54
  4. Step 4: Simplify right side
    13,804.82x = 81,703,867.49
  5. Step 5: Solve for x
    x = 81,703,867.49/13,804.82
  6. Step 6: Final answer
    x = 5,918.51

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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.