Home / 18,788.80-28,183.01-4,748.54

Finding the Fourth Proportional to 18,788.80, 28,183.01 and 4,748.54

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Solution

The fourth proportional to 18,788.80, 28,183.01 and 4,748.54 is: 7,122.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.80 : 28,183.01 = 4,748.54 : x
  2. Step 2: Convert to fraction form
    18,788.80/28,183.01 = 4,748.54/x
  3. Step 3: Cross multiply
    18,788.80x = 28,183.01 × 4,748.54
  4. Step 4: Simplify right side
    18,788.80x = 133,828,197.02
  5. Step 5: Solve for x
    x = 133,828,197.02/18,788.80
  6. Step 6: Final answer
    x = 7,122.77

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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.