Home / 12,789.75-19,184.64-3,555.75

Finding the Fourth Proportional to 12,789.75, 19,184.64 and 3,555.75

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Solution

The fourth proportional to 12,789.75, 19,184.64 and 3,555.75 is: 5,333.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.75 : 19,184.64 = 3,555.75 : x
  2. Step 2: Convert to fraction form
    12,789.75/19,184.64 = 3,555.75/x
  3. Step 3: Cross multiply
    12,789.75x = 19,184.64 × 3,555.75
  4. Step 4: Simplify right side
    12,789.75x = 68,215,783.68
  5. Step 5: Solve for x
    x = 68,215,783.68/12,789.75
  6. Step 6: Final answer
    x = 5,333.63

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Similar ratio
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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.