Home / 15.73-21.65-13.67

Finding the Fourth Proportional to 15.73, 21.65 and 13.67

Calculator

Solution

The fourth proportional to 15.73, 21.65 and 13.67 is: 18.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.73 : 21.65 = 13.67 : x
  2. Step 2: Convert to fraction form
    15.73/21.65 = 13.67/x
  3. Step 3: Cross multiply
    15.73x = 21.65 × 13.67
  4. Step 4: Simplify right side
    15.73x = 296.04
  5. Step 5: Solve for x
    x = 296.04/15.73
  6. Step 6: Final answer
    x = 18.82

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.