Home / 31,369.60-43,292.32-20,740.80

Finding the Fourth Proportional to 31,369.60, 43,292.32 and 20,740.80

Calculator

Solution

The fourth proportional to 31,369.60, 43,292.32 and 20,740.80 is: 28,623.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,369.60 : 43,292.32 = 20,740.80 : x
  2. Step 2: Convert to fraction form
    31,369.60/43,292.32 = 20,740.80/x
  3. Step 3: Cross multiply
    31,369.60x = 43,292.32 × 20,740.80
  4. Step 4: Simplify right side
    31,369.60x = 897,917,350.66
  5. Step 5: Solve for x
    x = 897,917,350.66/31,369.60
  6. Step 6: Final answer
    x = 28,623.81

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.