Home / 13.18-19.66-11.73

Finding the Fourth Proportional to 13.18, 19.66 and 11.73

Calculator

Solution

The fourth proportional to 13.18, 19.66 and 11.73 is: 17.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.18 : 19.66 = 11.73 : x
  2. Step 2: Convert to fraction form
    13.18/19.66 = 11.73/x
  3. Step 3: Cross multiply
    13.18x = 19.66 × 11.73
  4. Step 4: Simplify right side
    13.18x = 230.61
  5. Step 5: Solve for x
    x = 230.61/13.18
  6. Step 6: Final answer
    x = 17.50

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.