Home / 13,305.56-19,962.60-3,945.65

Finding the Fourth Proportional to 13,305.56, 19,962.60 and 3,945.65

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Solution

The fourth proportional to 13,305.56, 19,962.60 and 3,945.65 is: 5,919.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.56 : 19,962.60 = 3,945.65 : x
  2. Step 2: Convert to fraction form
    13,305.56/19,962.60 = 3,945.65/x
  3. Step 3: Cross multiply
    13,305.56x = 19,962.60 × 3,945.65
  4. Step 4: Simplify right side
    13,305.56x = 78,765,332.88
  5. Step 5: Solve for x
    x = 78,765,332.88/13,305.56
  6. Step 6: Final answer
    x = 5,919.73

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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.