Home / 10,930.94-16,395.49-3,139.75

Finding the Fourth Proportional to 10,930.94, 16,395.49 and 3,139.75

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Solution

The fourth proportional to 10,930.94, 16,395.49 and 3,139.75 is: 4,709.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,930.94 : 16,395.49 = 3,139.75 : x
  2. Step 2: Convert to fraction form
    10,930.94/16,395.49 = 3,139.75/x
  3. Step 3: Cross multiply
    10,930.94x = 16,395.49 × 3,139.75
  4. Step 4: Simplify right side
    10,930.94x = 51,477,739.73
  5. Step 5: Solve for x
    x = 51,477,739.73/10,930.94
  6. Step 6: Final answer
    x = 4,709.36

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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.