Home / 20,234.13-30,369.91-10,245.90

Finding the Fourth Proportional to 20,234.13, 30,369.91 and 10,245.90

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Solution

The fourth proportional to 20,234.13, 30,369.91 and 10,245.90 is: 15,378.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.13 : 30,369.91 = 10,245.90 : x
  2. Step 2: Convert to fraction form
    20,234.13/30,369.91 = 10,245.90/x
  3. Step 3: Cross multiply
    20,234.13x = 30,369.91 × 10,245.90
  4. Step 4: Simplify right side
    20,234.13x = 311,167,060.87
  5. Step 5: Solve for x
    x = 311,167,060.87/20,234.13
  6. Step 6: Final answer
    x = 15,378.33

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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.