Home / 12,578.76-18,868.79-3,218.86

Finding the Fourth Proportional to 12,578.76, 18,868.79 and 3,218.86

Calculator

Solution

The fourth proportional to 12,578.76, 18,868.79 and 3,218.86 is: 4,828.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.76 : 18,868.79 = 3,218.86 : x
  2. Step 2: Convert to fraction form
    12,578.76/18,868.79 = 3,218.86/x
  3. Step 3: Cross multiply
    12,578.76x = 18,868.79 × 3,218.86
  4. Step 4: Simplify right side
    12,578.76x = 60,736,025.01
  5. Step 5: Solve for x
    x = 60,736,025.01/12,578.76
  6. Step 6: Final answer
    x = 4,828.46

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.