Home / 21.39-29.52-11.69

Finding the Fourth Proportional to 21.39, 29.52 and 11.69

Calculator

Solution

The fourth proportional to 21.39, 29.52 and 11.69 is: 16.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21.39 : 29.52 = 11.69 : x
  2. Step 2: Convert to fraction form
    21.39/29.52 = 11.69/x
  3. Step 3: Cross multiply
    21.39x = 29.52 × 11.69
  4. Step 4: Simplify right side
    21.39x = 345.02
  5. Step 5: Solve for x
    x = 345.02/21.39
  6. Step 6: Final answer
    x = 16.13

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.