Home / 20,745.20-28,628.80-11,793.04

Finding the Fourth Proportional to 20,745.20, 28,628.80 and 11,793.04

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Solution

The fourth proportional to 20,745.20, 28,628.80 and 11,793.04 is: 16,274.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.20 : 28,628.80 = 11,793.04 : x
  2. Step 2: Convert to fraction form
    20,745.20/28,628.80 = 11,793.04/x
  3. Step 3: Cross multiply
    20,745.20x = 28,628.80 × 11,793.04
  4. Step 4: Simplify right side
    20,745.20x = 337,620,583.55
  5. Step 5: Solve for x
    x = 337,620,583.55/20,745.20
  6. Step 6: Final answer
    x = 16,274.64

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1.5x scale

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.