Home / 12,976.64-19,464.15-5,179.85

Finding the Fourth Proportional to 12,976.64, 19,464.15 and 5,179.85

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Solution

The fourth proportional to 12,976.64, 19,464.15 and 5,179.85 is: 7,769.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.64 : 19,464.15 = 5,179.85 : x
  2. Step 2: Convert to fraction form
    12,976.64/19,464.15 = 5,179.85/x
  3. Step 3: Cross multiply
    12,976.64x = 19,464.15 × 5,179.85
  4. Step 4: Simplify right side
    12,976.64x = 100,821,377.38
  5. Step 5: Solve for x
    x = 100,821,377.38/12,976.64
  6. Step 6: Final answer
    x = 7,769.45

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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.