Home / 12,879.39-19,318.71-4,114.83

Finding the Fourth Proportional to 12,879.39, 19,318.71 and 4,114.83

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Solution

The fourth proportional to 12,879.39, 19,318.71 and 4,114.83 is: 6,172.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.39 : 19,318.71 = 4,114.83 : x
  2. Step 2: Convert to fraction form
    12,879.39/19,318.71 = 4,114.83/x
  3. Step 3: Cross multiply
    12,879.39x = 19,318.71 × 4,114.83
  4. Step 4: Simplify right side
    12,879.39x = 79,493,207.47
  5. Step 5: Solve for x
    x = 79,493,207.47/12,879.39
  6. Step 6: Final answer
    x = 6,172.13

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1.5x scale

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.