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Finding the Fourth Proportional to 20,550.38, 30,843.04 and 8,079.12

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Solution

The fourth proportional to 20,550.38, 30,843.04 and 8,079.12 is: 12,125.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.38 : 30,843.04 = 8,079.12 : x
  2. Step 2: Convert to fraction form
    20,550.38/30,843.04 = 8,079.12/x
  3. Step 3: Cross multiply
    20,550.38x = 30,843.04 × 8,079.12
  4. Step 4: Simplify right side
    20,550.38x = 249,184,621.32
  5. Step 5: Solve for x
    x = 249,184,621.32/20,550.38
  6. Step 6: Final answer
    x = 12,125.55

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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.