Home / 36.01-53.99-20.80

Finding the Fourth Proportional to 36.01, 53.99 and 20.80

Calculator

Solution

The fourth proportional to 36.01, 53.99 and 20.80 is: 31.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.01 : 53.99 = 20.80 : x
  2. Step 2: Convert to fraction form
    36.01/53.99 = 20.80/x
  3. Step 3: Cross multiply
    36.01x = 53.99 × 20.80
  4. Step 4: Simplify right side
    36.01x = 1,122.89
  5. Step 5: Solve for x
    x = 1,122.89/36.01
  6. Step 6: Final answer
    x = 31.18

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.