Home / 12,879.62-19,320.51-4,114.34

Finding the Fourth Proportional to 12,879.62, 19,320.51 and 4,114.34

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Solution

The fourth proportional to 12,879.62, 19,320.51 and 4,114.34 is: 6,171.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.62 : 19,320.51 = 4,114.34 : x
  2. Step 2: Convert to fraction form
    12,879.62/19,320.51 = 4,114.34/x
  3. Step 3: Cross multiply
    12,879.62x = 19,320.51 × 4,114.34
  4. Step 4: Simplify right side
    12,879.62x = 79,491,147.11
  5. Step 5: Solve for x
    x = 79,491,147.11/12,879.62
  6. Step 6: Final answer
    x = 6,171.86

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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.