Home / 18,231.11-27,344.36-7,145.59

Finding the Fourth Proportional to 18,231.11, 27,344.36 and 7,145.59

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Solution

The fourth proportional to 18,231.11, 27,344.36 and 7,145.59 is: 10,717.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.11 : 27,344.36 = 7,145.59 : x
  2. Step 2: Convert to fraction form
    18,231.11/27,344.36 = 7,145.59/x
  3. Step 3: Cross multiply
    18,231.11x = 27,344.36 × 7,145.59
  4. Step 4: Simplify right side
    18,231.11x = 195,391,448.65
  5. Step 5: Solve for x
    x = 195,391,448.65/18,231.11
  6. Step 6: Final answer
    x = 10,717.47

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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.