Home / 20,109.35-30,164.10-8,414.37

Finding the Fourth Proportional to 20,109.35, 30,164.10 and 8,414.37

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Solution

The fourth proportional to 20,109.35, 30,164.10 and 8,414.37 is: 12,621.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.35 : 30,164.10 = 8,414.37 : x
  2. Step 2: Convert to fraction form
    20,109.35/30,164.10 = 8,414.37/x
  3. Step 3: Cross multiply
    20,109.35x = 30,164.10 × 8,414.37
  4. Step 4: Simplify right side
    20,109.35x = 253,811,747.30
  5. Step 5: Solve for x
    x = 253,811,747.30/20,109.35
  6. Step 6: Final answer
    x = 12,621.58

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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.