Home / 18,400.80-27,579.60-8,519.21

Finding the Fourth Proportional to 18,400.80, 27,579.60 and 8,519.21

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Solution

The fourth proportional to 18,400.80, 27,579.60 and 8,519.21 is: 12,768.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,400.80 : 27,579.60 = 8,519.21 : x
  2. Step 2: Convert to fraction form
    18,400.80/27,579.60 = 8,519.21/x
  3. Step 3: Cross multiply
    18,400.80x = 27,579.60 × 8,519.21
  4. Step 4: Simplify right side
    18,400.80x = 234,956,266.22
  5. Step 5: Solve for x
    x = 234,956,266.22/18,400.80
  6. Step 6: Final answer
    x = 12,768.81

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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.