Home / 20,231.26-27,923.61-13,145.38

Finding the Fourth Proportional to 20,231.26, 27,923.61 and 13,145.38

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Solution

The fourth proportional to 20,231.26, 27,923.61 and 13,145.38 is: 18,143.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.26 : 27,923.61 = 13,145.38 : x
  2. Step 2: Convert to fraction form
    20,231.26/27,923.61 = 13,145.38/x
  3. Step 3: Cross multiply
    20,231.26x = 27,923.61 × 13,145.38
  4. Step 4: Simplify right side
    20,231.26x = 367,066,464.42
  5. Step 5: Solve for x
    x = 367,066,464.42/20,231.26
  6. Step 6: Final answer
    x = 18,143.53

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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.