Home / 28.26-42.12-26.91

Finding the Fourth Proportional to 28.26, 42.12 and 26.91

Calculator

Solution

The fourth proportional to 28.26, 42.12 and 26.91 is: 40.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.26 : 42.12 = 26.91 : x
  2. Step 2: Convert to fraction form
    28.26/42.12 = 26.91/x
  3. Step 3: Cross multiply
    28.26x = 42.12 × 26.91
  4. Step 4: Simplify right side
    28.26x = 1,133.45
  5. Step 5: Solve for x
    x = 1,133.45/28.26
  6. Step 6: Final answer
    x = 40.11

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.