Home / 18,788.74-28,183.62-5,641.11

Finding the Fourth Proportional to 18,788.74, 28,183.62 and 5,641.11

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Solution

The fourth proportional to 18,788.74, 28,183.62 and 5,641.11 is: 8,461.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.74 : 28,183.62 = 5,641.11 : x
  2. Step 2: Convert to fraction form
    18,788.74/28,183.62 = 5,641.11/x
  3. Step 3: Cross multiply
    18,788.74x = 28,183.62 × 5,641.11
  4. Step 4: Simplify right side
    18,788.74x = 158,986,900.62
  5. Step 5: Solve for x
    x = 158,986,900.62/18,788.74
  6. Step 6: Final answer
    x = 8,461.82

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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.