Home / 20,198.43-30,295.80-5,406.84

Finding the Fourth Proportional to 20,198.43, 30,295.80 and 5,406.84

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Solution

The fourth proportional to 20,198.43, 30,295.80 and 5,406.84 is: 8,109.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.43 : 30,295.80 = 5,406.84 : x
  2. Step 2: Convert to fraction form
    20,198.43/30,295.80 = 5,406.84/x
  3. Step 3: Cross multiply
    20,198.43x = 30,295.80 × 5,406.84
  4. Step 4: Simplify right side
    20,198.43x = 163,804,543.27
  5. Step 5: Solve for x
    x = 163,804,543.27/20,198.43
  6. Step 6: Final answer
    x = 8,109.77

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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.