Home / 20,145.16-27,791.94-12,185.56

Finding the Fourth Proportional to 20,145.16, 27,791.94 and 12,185.56

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Solution

The fourth proportional to 20,145.16, 27,791.94 and 12,185.56 is: 16,811.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.16 : 27,791.94 = 12,185.56 : x
  2. Step 2: Convert to fraction form
    20,145.16/27,791.94 = 12,185.56/x
  3. Step 3: Cross multiply
    20,145.16x = 27,791.94 × 12,185.56
  4. Step 4: Simplify right side
    20,145.16x = 338,660,352.39
  5. Step 5: Solve for x
    x = 338,660,352.39/20,145.16
  6. Step 6: Final answer
    x = 16,811.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.