Home / 10,930.96-16,396.29-3,139.77

Finding the Fourth Proportional to 10,930.96, 16,396.29 and 3,139.77

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Solution

The fourth proportional to 10,930.96, 16,396.29 and 3,139.77 is: 4,709.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,930.96 : 16,396.29 = 3,139.77 : x
  2. Step 2: Convert to fraction form
    10,930.96/16,396.29 = 3,139.77/x
  3. Step 3: Cross multiply
    10,930.96x = 16,396.29 × 3,139.77
  4. Step 4: Simplify right side
    10,930.96x = 51,480,579.45
  5. Step 5: Solve for x
    x = 51,480,579.45/10,930.96
  6. Step 6: Final answer
    x = 4,709.61

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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.