Home / 20,621.71-30,930.02-8,780.24

Finding the Fourth Proportional to 20,621.71, 30,930.02 and 8,780.24

Calculator

Solution

The fourth proportional to 20,621.71, 30,930.02 and 8,780.24 is: 13,169.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.71 : 30,930.02 = 8,780.24 : x
  2. Step 2: Convert to fraction form
    20,621.71/30,930.02 = 8,780.24/x
  3. Step 3: Cross multiply
    20,621.71x = 30,930.02 × 8,780.24
  4. Step 4: Simplify right side
    20,621.71x = 271,572,954.90
  5. Step 5: Solve for x
    x = 271,572,954.90/20,621.71
  6. Step 6: Final answer
    x = 13,169.28

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.