Home / 20.36-28.11-16.69

Finding the Fourth Proportional to 20.36, 28.11 and 16.69

Calculator

Solution

The fourth proportional to 20.36, 28.11 and 16.69 is: 23.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20.36 : 28.11 = 16.69 : x
  2. Step 2: Convert to fraction form
    20.36/28.11 = 16.69/x
  3. Step 3: Cross multiply
    20.36x = 28.11 × 16.69
  4. Step 4: Simplify right side
    20.36x = 469.16
  5. Step 5: Solve for x
    x = 469.16/20.36
  6. Step 6: Final answer
    x = 23.04

Related Problems

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.