Home / 21.52-32.47-20.26

Finding the Fourth Proportional to 21.52, 32.47 and 20.26

Calculator

Solution

The fourth proportional to 21.52, 32.47 and 20.26 is: 30.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21.52 : 32.47 = 20.26 : x
  2. Step 2: Convert to fraction form
    21.52/32.47 = 20.26/x
  3. Step 3: Cross multiply
    21.52x = 32.47 × 20.26
  4. Step 4: Simplify right side
    21.52x = 657.84
  5. Step 5: Solve for x
    x = 657.84/21.52
  6. Step 6: Final answer
    x = 30.57

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.