Home / 13,918.89-20,879.55-3,530.64

Finding the Fourth Proportional to 13,918.89, 20,879.55 and 3,530.64

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Solution

The fourth proportional to 13,918.89, 20,879.55 and 3,530.64 is: 5,296.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.89 : 20,879.55 = 3,530.64 : x
  2. Step 2: Convert to fraction form
    13,918.89/20,879.55 = 3,530.64/x
  3. Step 3: Cross multiply
    13,918.89x = 20,879.55 × 3,530.64
  4. Step 4: Simplify right side
    13,918.89x = 73,718,174.41
  5. Step 5: Solve for x
    x = 73,718,174.41/13,918.89
  6. Step 6: Final answer
    x = 5,296.27

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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.