Home / 18,231.13-27,344.20-7,145.57

Finding the Fourth Proportional to 18,231.13, 27,344.20 and 7,145.57

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Solution

The fourth proportional to 18,231.13, 27,344.20 and 7,145.57 is: 10,717.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.13 : 27,344.20 = 7,145.57 : x
  2. Step 2: Convert to fraction form
    18,231.13/27,344.20 = 7,145.57/x
  3. Step 3: Cross multiply
    18,231.13x = 27,344.20 × 7,145.57
  4. Step 4: Simplify right side
    18,231.13x = 195,389,895.19
  5. Step 5: Solve for x
    x = 195,389,895.19/18,231.13
  6. Step 6: Final answer
    x = 10,717.38

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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.