Home / 20.93-28.88-12.74

Finding the Fourth Proportional to 20.93, 28.88 and 12.74

Calculator

Solution

The fourth proportional to 20.93, 28.88 and 12.74 is: 17.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20.93 : 28.88 = 12.74 : x
  2. Step 2: Convert to fraction form
    20.93/28.88 = 12.74/x
  3. Step 3: Cross multiply
    20.93x = 28.88 × 12.74
  4. Step 4: Simplify right side
    20.93x = 367.72
  5. Step 5: Solve for x
    x = 367.72/20.93
  6. Step 6: Final answer
    x = 17.57

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.