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Finding the Fourth Proportional to 12,879.96, 19,319.94 and 7,033.38

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Solution

The fourth proportional to 12,879.96, 19,319.94 and 7,033.38 is: 10,550.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.96 : 19,319.94 = 7,033.38 : x
  2. Step 2: Convert to fraction form
    12,879.96/19,319.94 = 7,033.38/x
  3. Step 3: Cross multiply
    12,879.96x = 19,319.94 × 7,033.38
  4. Step 4: Simplify right side
    12,879.96x = 135,884,479.60
  5. Step 5: Solve for x
    x = 135,884,479.60/12,879.96
  6. Step 6: Final answer
    x = 10,550.07

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Similar ratio
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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.