Home / 20,194.91-30,290.19-5,405.31

Finding the Fourth Proportional to 20,194.91, 30,290.19 and 5,405.31

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Solution

The fourth proportional to 20,194.91, 30,290.19 and 5,405.31 is: 8,107.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,194.91 : 30,290.19 = 5,405.31 : x
  2. Step 2: Convert to fraction form
    20,194.91/30,290.19 = 5,405.31/x
  3. Step 3: Cross multiply
    20,194.91x = 30,290.19 × 5,405.31
  4. Step 4: Simplify right side
    20,194.91x = 163,727,866.91
  5. Step 5: Solve for x
    x = 163,727,866.91/20,194.91
  6. Step 6: Final answer
    x = 8,107.38

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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.