Home / 12,743.45-19,114.49-3,977.36

Finding the Fourth Proportional to 12,743.45, 19,114.49 and 3,977.36

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Solution

The fourth proportional to 12,743.45, 19,114.49 and 3,977.36 is: 5,965.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.45 : 19,114.49 = 3,977.36 : x
  2. Step 2: Convert to fraction form
    12,743.45/19,114.49 = 3,977.36/x
  3. Step 3: Cross multiply
    12,743.45x = 19,114.49 × 3,977.36
  4. Step 4: Simplify right side
    12,743.45x = 76,025,207.95
  5. Step 5: Solve for x
    x = 76,025,207.95/12,743.45
  6. Step 6: Final answer
    x = 5,965.83

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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.