Home / 34.32-51.33-20.71

Finding the Fourth Proportional to 34.32, 51.33 and 20.71

Calculator

Solution

The fourth proportional to 34.32, 51.33 and 20.71 is: 30.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.32 : 51.33 = 20.71 : x
  2. Step 2: Convert to fraction form
    34.32/51.33 = 20.71/x
  3. Step 3: Cross multiply
    34.32x = 51.33 × 20.71
  4. Step 4: Simplify right side
    34.32x = 1,062.90
  5. Step 5: Solve for x
    x = 1,062.90/34.32
  6. Step 6: Final answer
    x = 30.97

Related Problems

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.