Home / 18,876.24-28,327.11-7,189.15

Finding the Fourth Proportional to 18,876.24, 28,327.11 and 7,189.15

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Solution

The fourth proportional to 18,876.24, 28,327.11 and 7,189.15 is: 10,788.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.24 : 28,327.11 = 7,189.15 : x
  2. Step 2: Convert to fraction form
    18,876.24/28,327.11 = 7,189.15/x
  3. Step 3: Cross multiply
    18,876.24x = 28,327.11 × 7,189.15
  4. Step 4: Simplify right side
    18,876.24x = 203,647,842.86
  5. Step 5: Solve for x
    x = 203,647,842.86/18,876.24
  6. Step 6: Final answer
    x = 10,788.58

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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.