Home / 39,902.78-55,066.20-21,998.42

Finding the Fourth Proportional to 39,902.78, 55,066.20 and 21,998.42

Calculator

Solution

The fourth proportional to 39,902.78, 55,066.20 and 21,998.42 is: 30,358.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,902.78 : 55,066.20 = 21,998.42 : x
  2. Step 2: Convert to fraction form
    39,902.78/55,066.20 = 21,998.42/x
  3. Step 3: Cross multiply
    39,902.78x = 55,066.20 × 21,998.42
  4. Step 4: Simplify right side
    39,902.78x = 1,211,369,244.08
  5. Step 5: Solve for x
    x = 1,211,369,244.08/39,902.78
  6. Step 6: Final answer
    x = 30,358.01

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.