Home / 12,127.80-18,198.66-5,107.26

Finding the Fourth Proportional to 12,127.80, 18,198.66 and 5,107.26

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Solution

The fourth proportional to 12,127.80, 18,198.66 and 5,107.26 is: 7,663.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.80 : 18,198.66 = 5,107.26 : x
  2. Step 2: Convert to fraction form
    12,127.80/18,198.66 = 5,107.26/x
  3. Step 3: Cross multiply
    12,127.80x = 18,198.66 × 5,107.26
  4. Step 4: Simplify right side
    12,127.80x = 92,945,288.27
  5. Step 5: Solve for x
    x = 92,945,288.27/12,127.80
  6. Step 6: Final answer
    x = 7,663.82

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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.