Home / 20,793.60-31,171.20-7,638.72

Finding the Fourth Proportional to 20,793.60, 31,171.20 and 7,638.72

Calculator

Solution

The fourth proportional to 20,793.60, 31,171.20 and 7,638.72 is: 11,451.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.60 : 31,171.20 = 7,638.72 : x
  2. Step 2: Convert to fraction form
    20,793.60/31,171.20 = 7,638.72/x
  3. Step 3: Cross multiply
    20,793.60x = 31,171.20 × 7,638.72
  4. Step 4: Simplify right side
    20,793.60x = 238,108,068.86
  5. Step 5: Solve for x
    x = 238,108,068.86/20,793.60
  6. Step 6: Final answer
    x = 11,451.03

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.