Home / 27.22-37.61-21.80

Finding the Fourth Proportional to 27.22, 37.61 and 21.80

Calculator

Solution

The fourth proportional to 27.22, 37.61 and 21.80 is: 30.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.22 : 37.61 = 21.80 : x
  2. Step 2: Convert to fraction form
    27.22/37.61 = 21.80/x
  3. Step 3: Cross multiply
    27.22x = 37.61 × 21.80
  4. Step 4: Simplify right side
    27.22x = 819.79
  5. Step 5: Solve for x
    x = 819.79/27.22
  6. Step 6: Final answer
    x = 30.12

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.