Home / 10.06-13.87-6.42

Finding the Fourth Proportional to 10.06, 13.87 and 6.42

Calculator

Solution

The fourth proportional to 10.06, 13.87 and 6.42 is: 8.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.06 : 13.87 = 6.42 : x
  2. Step 2: Convert to fraction form
    10.06/13.87 = 6.42/x
  3. Step 3: Cross multiply
    10.06x = 13.87 × 6.42
  4. Step 4: Simplify right side
    10.06x = 89.11
  5. Step 5: Solve for x
    x = 89.11/10.06
  6. Step 6: Final answer
    x = 8.86

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.