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Finding the Fourth Proportional to 20,239.99, 30,360.89 and 6,198.99

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Solution

The fourth proportional to 20,239.99, 30,360.89 and 6,198.99 is: 9,298.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.99 : 30,360.89 = 6,198.99 : x
  2. Step 2: Convert to fraction form
    20,239.99/30,360.89 = 6,198.99/x
  3. Step 3: Cross multiply
    20,239.99x = 30,360.89 × 6,198.99
  4. Step 4: Simplify right side
    20,239.99x = 188,206,981.70
  5. Step 5: Solve for x
    x = 188,206,981.70/20,239.99
  6. Step 6: Final answer
    x = 9,298.77

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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.