Home / 12,906.08-19,356.72-4,138.88

Finding the Fourth Proportional to 12,906.08, 19,356.72 and 4,138.88

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Solution

The fourth proportional to 12,906.08, 19,356.72 and 4,138.88 is: 6,207.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,906.08 : 19,356.72 = 4,138.88 : x
  2. Step 2: Convert to fraction form
    12,906.08/19,356.72 = 4,138.88/x
  3. Step 3: Cross multiply
    12,906.08x = 19,356.72 × 4,138.88
  4. Step 4: Simplify right side
    12,906.08x = 80,115,141.27
  5. Step 5: Solve for x
    x = 80,115,141.27/12,906.08
  6. Step 6: Final answer
    x = 6,207.55

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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.