Home / 30.79-46.14-18.73

Finding the Fourth Proportional to 30.79, 46.14 and 18.73

Calculator

Solution

The fourth proportional to 30.79, 46.14 and 18.73 is: 28.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30.79 : 46.14 = 18.73 : x
  2. Step 2: Convert to fraction form
    30.79/46.14 = 18.73/x
  3. Step 3: Cross multiply
    30.79x = 46.14 × 18.73
  4. Step 4: Simplify right side
    30.79x = 864.20
  5. Step 5: Solve for x
    x = 864.20/30.79
  6. Step 6: Final answer
    x = 28.07

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.