Home / 12,121.96-18,173.10-5,453.58

Finding the Fourth Proportional to 12,121.96, 18,173.10 and 5,453.58

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Solution

The fourth proportional to 12,121.96, 18,173.10 and 5,453.58 is: 8,175.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.96 : 18,173.10 = 5,453.58 : x
  2. Step 2: Convert to fraction form
    12,121.96/18,173.10 = 5,453.58/x
  3. Step 3: Cross multiply
    12,121.96x = 18,173.10 × 5,453.58
  4. Step 4: Simplify right side
    12,121.96x = 99,108,454.70
  5. Step 5: Solve for x
    x = 99,108,454.70/12,121.96
  6. Step 6: Final answer
    x = 8,175.94

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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.