Home / 20,155.80-30,230.30-5,364.92

Finding the Fourth Proportional to 20,155.80, 30,230.30 and 5,364.92

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Solution

The fourth proportional to 20,155.80, 30,230.30 and 5,364.92 is: 8,046.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.80 : 30,230.30 = 5,364.92 : x
  2. Step 2: Convert to fraction form
    20,155.80/30,230.30 = 5,364.92/x
  3. Step 3: Cross multiply
    20,155.80x = 30,230.30 × 5,364.92
  4. Step 4: Simplify right side
    20,155.80x = 162,183,141.08
  5. Step 5: Solve for x
    x = 162,183,141.08/20,155.80
  6. Step 6: Final answer
    x = 8,046.48

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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.