Home / 18,231.18-27,344.45-7,145.65

Finding the Fourth Proportional to 18,231.18, 27,344.45 and 7,145.65

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Solution

The fourth proportional to 18,231.18, 27,344.45 and 7,145.65 is: 10,717.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.18 : 27,344.45 = 7,145.65 : x
  2. Step 2: Convert to fraction form
    18,231.18/27,344.45 = 7,145.65/x
  3. Step 3: Cross multiply
    18,231.18x = 27,344.45 × 7,145.65
  4. Step 4: Simplify right side
    18,231.18x = 195,393,921.19
  5. Step 5: Solve for x
    x = 195,393,921.19/18,231.18
  6. Step 6: Final answer
    x = 10,717.57

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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.