Home / 20,140.45-30,208.55-5,350.86

Finding the Fourth Proportional to 20,140.45, 30,208.55 and 5,350.86

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Solution

The fourth proportional to 20,140.45, 30,208.55 and 5,350.86 is: 8,025.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.45 : 30,208.55 = 5,350.86 : x
  2. Step 2: Convert to fraction form
    20,140.45/30,208.55 = 5,350.86/x
  3. Step 3: Cross multiply
    20,140.45x = 30,208.55 × 5,350.86
  4. Step 4: Simplify right side
    20,140.45x = 161,641,695.10
  5. Step 5: Solve for x
    x = 161,641,695.10/20,140.45
  6. Step 6: Final answer
    x = 8,025.73

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1.5x scale

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.