Home / 13,921.12-20,868.36-5,153.68

Finding the Fourth Proportional to 13,921.12, 20,868.36 and 5,153.68

Calculator

Solution

The fourth proportional to 13,921.12, 20,868.36 and 5,153.68 is: 7,725.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.12 : 20,868.36 = 5,153.68 : x
  2. Step 2: Convert to fraction form
    13,921.12/20,868.36 = 5,153.68/x
  3. Step 3: Cross multiply
    13,921.12x = 20,868.36 × 5,153.68
  4. Step 4: Simplify right side
    13,921.12x = 107,548,849.56
  5. Step 5: Solve for x
    x = 107,548,849.56/13,921.12
  6. Step 6: Final answer
    x = 7,725.59

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.