Home / 12,124.47-18,198.96-8,618.44

Finding the Fourth Proportional to 12,124.47, 18,198.96 and 8,618.44

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Solution

The fourth proportional to 12,124.47, 18,198.96 and 8,618.44 is: 12,936.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,124.47 : 18,198.96 = 8,618.44 : x
  2. Step 2: Convert to fraction form
    12,124.47/18,198.96 = 8,618.44/x
  3. Step 3: Cross multiply
    12,124.47x = 18,198.96 × 8,618.44
  4. Step 4: Simplify right side
    12,124.47x = 156,846,644.82
  5. Step 5: Solve for x
    x = 156,846,644.82/12,124.47
  6. Step 6: Final answer
    x = 12,936.37

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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.