Home / 20,195.91-30,291.69-5,406.31

Finding the Fourth Proportional to 20,195.91, 30,291.69 and 5,406.31

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Solution

The fourth proportional to 20,195.91, 30,291.69 and 5,406.31 is: 8,108.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.91 : 30,291.69 = 5,406.31 : x
  2. Step 2: Convert to fraction form
    20,195.91/30,291.69 = 5,406.31/x
  3. Step 3: Cross multiply
    20,195.91x = 30,291.69 × 5,406.31
  4. Step 4: Simplify right side
    20,195.91x = 163,766,266.56
  5. Step 5: Solve for x
    x = 163,766,266.56/20,195.91
  6. Step 6: Final answer
    x = 8,108.88

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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.