Home / 12,879.05-19,319.27-4,114.62

Finding the Fourth Proportional to 12,879.05, 19,319.27 and 4,114.62

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Solution

The fourth proportional to 12,879.05, 19,319.27 and 4,114.62 is: 6,172.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.05 : 19,319.27 = 4,114.62 : x
  2. Step 2: Convert to fraction form
    12,879.05/19,319.27 = 4,114.62/x
  3. Step 3: Cross multiply
    12,879.05x = 19,319.27 × 4,114.62
  4. Step 4: Simplify right side
    12,879.05x = 79,491,434.15
  5. Step 5: Solve for x
    x = 79,491,434.15/12,879.05
  6. Step 6: Final answer
    x = 6,172.15

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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.