Home / 20,589.09-30,876.70-8,105.84

Finding the Fourth Proportional to 20,589.09, 30,876.70 and 8,105.84

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Solution

The fourth proportional to 20,589.09, 30,876.70 and 8,105.84 is: 12,156.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.09 : 30,876.70 = 8,105.84 : x
  2. Step 2: Convert to fraction form
    20,589.09/30,876.70 = 8,105.84/x
  3. Step 3: Cross multiply
    20,589.09x = 30,876.70 × 8,105.84
  4. Step 4: Simplify right side
    20,589.09x = 250,281,589.93
  5. Step 5: Solve for x
    x = 250,281,589.93/20,589.09
  6. Step 6: Final answer
    x = 12,156.03

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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.