Home / 13.08-18.03-12.45

Finding the Fourth Proportional to 13.08, 18.03 and 12.45

Calculator

Solution

The fourth proportional to 13.08, 18.03 and 12.45 is: 17.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.08 : 18.03 = 12.45 : x
  2. Step 2: Convert to fraction form
    13.08/18.03 = 12.45/x
  3. Step 3: Cross multiply
    13.08x = 18.03 × 12.45
  4. Step 4: Simplify right side
    13.08x = 224.47
  5. Step 5: Solve for x
    x = 224.47/13.08
  6. Step 6: Final answer
    x = 17.16

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.