Home / 12,976.80-19,467.92-4,211.02

Finding the Fourth Proportional to 12,976.80, 19,467.92 and 4,211.02

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Solution

The fourth proportional to 12,976.80, 19,467.92 and 4,211.02 is: 6,317.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.80 : 19,467.92 = 4,211.02 : x
  2. Step 2: Convert to fraction form
    12,976.80/19,467.92 = 4,211.02/x
  3. Step 3: Cross multiply
    12,976.80x = 19,467.92 × 4,211.02
  4. Step 4: Simplify right side
    12,976.80x = 81,979,800.48
  5. Step 5: Solve for x
    x = 81,979,800.48/12,976.80
  6. Step 6: Final answer
    x = 6,317.41

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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.