Home / 12,786.95-19,179.99-3,901.93

Finding the Fourth Proportional to 12,786.95, 19,179.99 and 3,901.93

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Solution

The fourth proportional to 12,786.95, 19,179.99 and 3,901.93 is: 5,852.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786.95 : 19,179.99 = 3,901.93 : x
  2. Step 2: Convert to fraction form
    12,786.95/19,179.99 = 3,901.93/x
  3. Step 3: Cross multiply
    12,786.95x = 19,179.99 × 3,901.93
  4. Step 4: Simplify right side
    12,786.95x = 74,838,930.43
  5. Step 5: Solve for x
    x = 74,838,930.43/12,786.95
  6. Step 6: Final answer
    x = 5,852.76

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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.