Home / 18,310.87-27,467.68-7,779.71

Finding the Fourth Proportional to 18,310.87, 27,467.68 and 7,779.71

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Solution

The fourth proportional to 18,310.87, 27,467.68 and 7,779.71 is: 11,670.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.87 : 27,467.68 = 7,779.71 : x
  2. Step 2: Convert to fraction form
    18,310.87/27,467.68 = 7,779.71/x
  3. Step 3: Cross multiply
    18,310.87x = 27,467.68 × 7,779.71
  4. Step 4: Simplify right side
    18,310.87x = 213,690,447.43
  5. Step 5: Solve for x
    x = 213,690,447.43/18,310.87
  6. Step 6: Final answer
    x = 11,670.14

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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.