Home / 12,387.28-18,578.04-7,391.06

Finding the Fourth Proportional to 12,387.28, 18,578.04 and 7,391.06

Calculator

Solution

The fourth proportional to 12,387.28, 18,578.04 and 7,391.06 is: 11,084.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.28 : 18,578.04 = 7,391.06 : x
  2. Step 2: Convert to fraction form
    12,387.28/18,578.04 = 7,391.06/x
  3. Step 3: Cross multiply
    12,387.28x = 18,578.04 × 7,391.06
  4. Step 4: Simplify right side
    12,387.28x = 137,311,408.32
  5. Step 5: Solve for x
    x = 137,311,408.32/12,387.28
  6. Step 6: Final answer
    x = 11,084.87

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.