Home / 20,589.50-30,891.62-8,102.60

Finding the Fourth Proportional to 20,589.50, 30,891.62 and 8,102.60

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Solution

The fourth proportional to 20,589.50, 30,891.62 and 8,102.60 is: 12,156.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.50 : 30,891.62 = 8,102.60 : x
  2. Step 2: Convert to fraction form
    20,589.50/30,891.62 = 8,102.60/x
  3. Step 3: Cross multiply
    20,589.50x = 30,891.62 × 8,102.60
  4. Step 4: Simplify right side
    20,589.50x = 250,302,440.21
  5. Step 5: Solve for x
    x = 250,302,440.21/20,589.50
  6. Step 6: Final answer
    x = 12,156.80

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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.