Home / 18,872.60-28,313.75-7,179.44

Finding the Fourth Proportional to 18,872.60, 28,313.75 and 7,179.44

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Solution

The fourth proportional to 18,872.60, 28,313.75 and 7,179.44 is: 10,771.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.60 : 28,313.75 = 7,179.44 : x
  2. Step 2: Convert to fraction form
    18,872.60/28,313.75 = 7,179.44/x
  3. Step 3: Cross multiply
    18,872.60x = 28,313.75 × 7,179.44
  4. Step 4: Simplify right side
    18,872.60x = 203,276,745.68
  5. Step 5: Solve for x
    x = 203,276,745.68/18,872.60
  6. Step 6: Final answer
    x = 10,771.00

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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.