Home / 13,149.77-19,727.64-3,789.86

Finding the Fourth Proportional to 13,149.77, 19,727.64 and 3,789.86

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Solution

The fourth proportional to 13,149.77, 19,727.64 and 3,789.86 is: 5,685.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.77 : 19,727.64 = 3,789.86 : x
  2. Step 2: Convert to fraction form
    13,149.77/19,727.64 = 3,789.86/x
  3. Step 3: Cross multiply
    13,149.77x = 19,727.64 × 3,789.86
  4. Step 4: Simplify right side
    13,149.77x = 74,764,895.09
  5. Step 5: Solve for x
    x = 74,764,895.09/13,149.77
  6. Step 6: Final answer
    x = 5,685.64

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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.