Home / 12,794.36-19,191.69-3,909.87

Finding the Fourth Proportional to 12,794.36, 19,191.69 and 3,909.87

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Solution

The fourth proportional to 12,794.36, 19,191.69 and 3,909.87 is: 5,864.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,794.36 : 19,191.69 = 3,909.87 : x
  2. Step 2: Convert to fraction form
    12,794.36/19,191.69 = 3,909.87/x
  3. Step 3: Cross multiply
    12,794.36x = 19,191.69 × 3,909.87
  4. Step 4: Simplify right side
    12,794.36x = 75,037,012.98
  5. Step 5: Solve for x
    x = 75,037,012.98/12,794.36
  6. Step 6: Final answer
    x = 5,864.85

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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.