Home / 12,122.45-18,185.49-4,329.44

Finding the Fourth Proportional to 12,122.45, 18,185.49 and 4,329.44

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Solution

The fourth proportional to 12,122.45, 18,185.49 and 4,329.44 is: 6,494.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.45 : 18,185.49 = 4,329.44 : x
  2. Step 2: Convert to fraction form
    12,122.45/18,185.49 = 4,329.44/x
  3. Step 3: Cross multiply
    12,122.45x = 18,185.49 × 4,329.44
  4. Step 4: Simplify right side
    12,122.45x = 78,732,987.83
  5. Step 5: Solve for x
    x = 78,732,987.83/12,122.45
  6. Step 6: Final answer
    x = 6,494.81

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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.