Home / 13,179.85-19,768.33-3,319.13

Finding the Fourth Proportional to 13,179.85, 19,768.33 and 3,319.13

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Solution

The fourth proportional to 13,179.85, 19,768.33 and 3,319.13 is: 4,978.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.85 : 19,768.33 = 3,319.13 : x
  2. Step 2: Convert to fraction form
    13,179.85/19,768.33 = 3,319.13/x
  3. Step 3: Cross multiply
    13,179.85x = 19,768.33 × 3,319.13
  4. Step 4: Simplify right side
    13,179.85x = 65,613,657.15
  5. Step 5: Solve for x
    x = 65,613,657.15/13,179.85
  6. Step 6: Final answer
    x = 4,978.33

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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.