Home / 12,179.82-16,809.80-7,145.27

Finding the Fourth Proportional to 12,179.82, 16,809.80 and 7,145.27

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Solution

The fourth proportional to 12,179.82, 16,809.80 and 7,145.27 is: 9,861.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.82 : 16,809.80 = 7,145.27 : x
  2. Step 2: Convert to fraction form
    12,179.82/16,809.80 = 7,145.27/x
  3. Step 3: Cross multiply
    12,179.82x = 16,809.80 × 7,145.27
  4. Step 4: Simplify right side
    12,179.82x = 120,110,439.87
  5. Step 5: Solve for x
    x = 120,110,439.87/12,179.82
  6. Step 6: Final answer
    x = 9,861.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.