Home / 21,824.37-30,120.39-12,391.11

Finding the Fourth Proportional to 21,824.37, 30,120.39 and 12,391.11

Calculator

Solution

The fourth proportional to 21,824.37, 30,120.39 and 12,391.11 is: 17,101.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,824.37 : 30,120.39 = 12,391.11 : x
  2. Step 2: Convert to fraction form
    21,824.37/30,120.39 = 12,391.11/x
  3. Step 3: Cross multiply
    21,824.37x = 30,120.39 × 12,391.11
  4. Step 4: Simplify right side
    21,824.37x = 373,225,065.73
  5. Step 5: Solve for x
    x = 373,225,065.73/21,824.37
  6. Step 6: Final answer
    x = 17,101.30

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.