Home / 8,156.80-12,157.60-8,143.68

Finding the Fourth Proportional to 8,156.80, 12,157.60 and 8,143.68

Calculator

Solution

The fourth proportional to 8,156.80, 12,157.60 and 8,143.68 is: 12,138.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156.80 : 12,157.60 = 8,143.68 : x
  2. Step 2: Convert to fraction form
    8,156.80/12,157.60 = 8,143.68/x
  3. Step 3: Cross multiply
    8,156.80x = 12,157.60 × 8,143.68
  4. Step 4: Simplify right side
    8,156.80x = 99,007,603.97
  5. Step 5: Solve for x
    x = 99,007,603.97/8,156.80
  6. Step 6: Final answer
    x = 12,138.04

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.