Home / 12,121.88-18,175.73-4,625.87

Finding the Fourth Proportional to 12,121.88, 18,175.73 and 4,625.87

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Solution

The fourth proportional to 12,121.88, 18,175.73 and 4,625.87 is: 6,936.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.88 : 18,175.73 = 4,625.87 : x
  2. Step 2: Convert to fraction form
    12,121.88/18,175.73 = 4,625.87/x
  3. Step 3: Cross multiply
    12,121.88x = 18,175.73 × 4,625.87
  4. Step 4: Simplify right side
    12,121.88x = 84,078,450.13
  5. Step 5: Solve for x
    x = 84,078,450.13/12,121.88
  6. Step 6: Final answer
    x = 6,936.09

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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.