Home / 13.93-19.22-8.47

Finding the Fourth Proportional to 13.93, 19.22 and 8.47

Calculator

Solution

The fourth proportional to 13.93, 19.22 and 8.47 is: 11.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.93 : 19.22 = 8.47 : x
  2. Step 2: Convert to fraction form
    13.93/19.22 = 8.47/x
  3. Step 3: Cross multiply
    13.93x = 19.22 × 8.47
  4. Step 4: Simplify right side
    13.93x = 162.79
  5. Step 5: Solve for x
    x = 162.79/13.93
  6. Step 6: Final answer
    x = 11.69

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.