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Finding the Fourth Proportional to 20,216.99, 30,379.25 and 10,863.92

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Solution

The fourth proportional to 20,216.99, 30,379.25 and 10,863.92 is: 16,324.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.99 : 30,379.25 = 10,863.92 : x
  2. Step 2: Convert to fraction form
    20,216.99/30,379.25 = 10,863.92/x
  3. Step 3: Cross multiply
    20,216.99x = 30,379.25 × 10,863.92
  4. Step 4: Simplify right side
    20,216.99x = 330,037,844.77
  5. Step 5: Solve for x
    x = 330,037,844.77/20,216.99
  6. Step 6: Final answer
    x = 16,324.77

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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.