Home / 10,086.38-15,129.51-2,589.90

Finding the Fourth Proportional to 10,086.38, 15,129.51 and 2,589.90

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Solution

The fourth proportional to 10,086.38, 15,129.51 and 2,589.90 is: 3,884.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,086.38 : 15,129.51 = 2,589.90 : x
  2. Step 2: Convert to fraction form
    10,086.38/15,129.51 = 2,589.90/x
  3. Step 3: Cross multiply
    10,086.38x = 15,129.51 × 2,589.90
  4. Step 4: Simplify right side
    10,086.38x = 39,183,917.95
  5. Step 5: Solve for x
    x = 39,183,917.95/10,086.38
  6. Step 6: Final answer
    x = 3,884.84

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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.