Home / 12,879.18-19,316.91-4,112.94

Finding the Fourth Proportional to 12,879.18, 19,316.91 and 4,112.94

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Solution

The fourth proportional to 12,879.18, 19,316.91 and 4,112.94 is: 6,168.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.18 : 19,316.91 = 4,112.94 : x
  2. Step 2: Convert to fraction form
    12,879.18/19,316.91 = 4,112.94/x
  3. Step 3: Cross multiply
    12,879.18x = 19,316.91 × 4,112.94
  4. Step 4: Simplify right side
    12,879.18x = 79,449,291.82
  5. Step 5: Solve for x
    x = 79,449,291.82/12,879.18
  6. Step 6: Final answer
    x = 6,168.82

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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.