Home / 12,789.62-19,179.39-6,213.86

Finding the Fourth Proportional to 12,789.62, 19,179.39 and 6,213.86

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Solution

The fourth proportional to 12,789.62, 19,179.39 and 6,213.86 is: 9,318.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.62 : 19,179.39 = 6,213.86 : x
  2. Step 2: Convert to fraction form
    12,789.62/19,179.39 = 6,213.86/x
  3. Step 3: Cross multiply
    12,789.62x = 19,179.39 × 6,213.86
  4. Step 4: Simplify right side
    12,789.62x = 119,178,044.35
  5. Step 5: Solve for x
    x = 119,178,044.35/12,789.62
  6. Step 6: Final answer
    x = 9,318.34

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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.