Home / 19.38-29.12-16.86

Finding the Fourth Proportional to 19.38, 29.12 and 16.86

Calculator

Solution

The fourth proportional to 19.38, 29.12 and 16.86 is: 25.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19.38 : 29.12 = 16.86 : x
  2. Step 2: Convert to fraction form
    19.38/29.12 = 16.86/x
  3. Step 3: Cross multiply
    19.38x = 29.12 × 16.86
  4. Step 4: Simplify right side
    19.38x = 490.96
  5. Step 5: Solve for x
    x = 490.96/19.38
  6. Step 6: Final answer
    x = 25.33

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.