Home / 20,365.18-28,105.11-11,415.60

Finding the Fourth Proportional to 20,365.18, 28,105.11 and 11,415.60

Calculator

Solution

The fourth proportional to 20,365.18, 28,105.11 and 11,415.60 is: 15,754.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.18 : 28,105.11 = 11,415.60 : x
  2. Step 2: Convert to fraction form
    20,365.18/28,105.11 = 11,415.60/x
  3. Step 3: Cross multiply
    20,365.18x = 28,105.11 × 11,415.60
  4. Step 4: Simplify right side
    20,365.18x = 320,836,693.72
  5. Step 5: Solve for x
    x = 320,836,693.72/20,365.18
  6. Step 6: Final answer
    x = 15,754.18

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.