Home / 20,171.10-30,244.30-8,321.21

Finding the Fourth Proportional to 20,171.10, 30,244.30 and 8,321.21

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Solution

The fourth proportional to 20,171.10, 30,244.30 and 8,321.21 is: 12,476.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.10 : 30,244.30 = 8,321.21 : x
  2. Step 2: Convert to fraction form
    20,171.10/30,244.30 = 8,321.21/x
  3. Step 3: Cross multiply
    20,171.10x = 30,244.30 × 8,321.21
  4. Step 4: Simplify right side
    20,171.10x = 251,668,999.58
  5. Step 5: Solve for x
    x = 251,668,999.58/20,171.10
  6. Step 6: Final answer
    x = 12,476.71

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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.