Home / 12,179.17-18,231.76-7,799.70

Finding the Fourth Proportional to 12,179.17, 18,231.76 and 7,799.70

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Solution

The fourth proportional to 12,179.17, 18,231.76 and 7,799.70 is: 11,675.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.17 : 18,231.76 = 7,799.70 : x
  2. Step 2: Convert to fraction form
    12,179.17/18,231.76 = 7,799.70/x
  3. Step 3: Cross multiply
    12,179.17x = 18,231.76 × 7,799.70
  4. Step 4: Simplify right side
    12,179.17x = 142,202,219.47
  5. Step 5: Solve for x
    x = 142,202,219.47/12,179.17
  6. Step 6: Final answer
    x = 11,675.86

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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.