Home / 18,788.29-28,183.75-5,641.65

Finding the Fourth Proportional to 18,788.29, 28,183.75 and 5,641.65

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Solution

The fourth proportional to 18,788.29, 28,183.75 and 5,641.65 is: 8,462.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.29 : 28,183.75 = 5,641.65 : x
  2. Step 2: Convert to fraction form
    18,788.29/28,183.75 = 5,641.65/x
  3. Step 3: Cross multiply
    18,788.29x = 28,183.75 × 5,641.65
  4. Step 4: Simplify right side
    18,788.29x = 159,002,839.08
  5. Step 5: Solve for x
    x = 159,002,839.08/18,788.29
  6. Step 6: Final answer
    x = 8,462.87

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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.