Home / 20,828.12-31,228.29-11,472.57

Finding the Fourth Proportional to 20,828.12, 31,228.29 and 11,472.57

Calculator

Solution

The fourth proportional to 20,828.12, 31,228.29 and 11,472.57 is: 17,201.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828.12 : 31,228.29 = 11,472.57 : x
  2. Step 2: Convert to fraction form
    20,828.12/31,228.29 = 11,472.57/x
  3. Step 3: Cross multiply
    20,828.12x = 31,228.29 × 11,472.57
  4. Step 4: Simplify right side
    20,828.12x = 358,268,743.01
  5. Step 5: Solve for x
    x = 358,268,743.01/20,828.12
  6. Step 6: Final answer
    x = 17,201.21

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.