Home / 20,388.45-30,585.72-7,239.72

Finding the Fourth Proportional to 20,388.45, 30,585.72 and 7,239.72

Calculator

Solution

The fourth proportional to 20,388.45, 30,585.72 and 7,239.72 is: 10,860.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.45 : 30,585.72 = 7,239.72 : x
  2. Step 2: Convert to fraction form
    20,388.45/30,585.72 = 7,239.72/x
  3. Step 3: Cross multiply
    20,388.45x = 30,585.72 × 7,239.72
  4. Step 4: Simplify right side
    20,388.45x = 221,432,048.80
  5. Step 5: Solve for x
    x = 221,432,048.80/20,388.45
  6. Step 6: Final answer
    x = 10,860.66

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.