Home / 31,718.23-43,775.81-18,286.85

Finding the Fourth Proportional to 31,718.23, 43,775.81 and 18,286.85

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Solution

The fourth proportional to 31,718.23, 43,775.81 and 18,286.85 is: 25,238.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,718.23 : 43,775.81 = 18,286.85 : x
  2. Step 2: Convert to fraction form
    31,718.23/43,775.81 = 18,286.85/x
  3. Step 3: Cross multiply
    31,718.23x = 43,775.81 × 18,286.85
  4. Step 4: Simplify right side
    31,718.23x = 800,521,860.54
  5. Step 5: Solve for x
    x = 800,521,860.54/31,718.23
  6. Step 6: Final answer
    x = 25,238.54

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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.