Home / 13.31-18.36-10.88

Finding the Fourth Proportional to 13.31, 18.36 and 10.88

Calculator

Solution

The fourth proportional to 13.31, 18.36 and 10.88 is: 15.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.31 : 18.36 = 10.88 : x
  2. Step 2: Convert to fraction form
    13.31/18.36 = 10.88/x
  3. Step 3: Cross multiply
    13.31x = 18.36 × 10.88
  4. Step 4: Simplify right side
    13.31x = 199.73
  5. Step 5: Solve for x
    x = 199.73/13.31
  6. Step 6: Final answer
    x = 15.01

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.