Home / 12,145.11-18,218.31-3,825.77

Finding the Fourth Proportional to 12,145.11, 18,218.31 and 3,825.77

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Solution

The fourth proportional to 12,145.11, 18,218.31 and 3,825.77 is: 5,738.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.11 : 18,218.31 = 3,825.77 : x
  2. Step 2: Convert to fraction form
    12,145.11/18,218.31 = 3,825.77/x
  3. Step 3: Cross multiply
    12,145.11x = 18,218.31 × 3,825.77
  4. Step 4: Simplify right side
    12,145.11x = 69,699,109.39
  5. Step 5: Solve for x
    x = 69,699,109.39/12,145.11
  6. Step 6: Final answer
    x = 5,738.86

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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.