Home / 20,619.23-30,908.08-8,134.43

Finding the Fourth Proportional to 20,619.23, 30,908.08 and 8,134.43

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Solution

The fourth proportional to 20,619.23, 30,908.08 and 8,134.43 is: 12,193.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.23 : 30,908.08 = 8,134.43 : x
  2. Step 2: Convert to fraction form
    20,619.23/30,908.08 = 8,134.43/x
  3. Step 3: Cross multiply
    20,619.23x = 30,908.08 × 8,134.43
  4. Step 4: Simplify right side
    20,619.23x = 251,419,468.82
  5. Step 5: Solve for x
    x = 251,419,468.82/20,619.23
  6. Step 6: Final answer
    x = 12,193.44

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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.