Home / 28.96-39.97-18.59

Finding the Fourth Proportional to 28.96, 39.97 and 18.59

Calculator

Solution

The fourth proportional to 28.96, 39.97 and 18.59 is: 25.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.96 : 39.97 = 18.59 : x
  2. Step 2: Convert to fraction form
    28.96/39.97 = 18.59/x
  3. Step 3: Cross multiply
    28.96x = 39.97 × 18.59
  4. Step 4: Simplify right side
    28.96x = 743.04
  5. Step 5: Solve for x
    x = 743.04/28.96
  6. Step 6: Final answer
    x = 25.66

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.