Home / 20,889.92-31,339.44-8,410.37

Finding the Fourth Proportional to 20,889.92, 31,339.44 and 8,410.37

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Solution

The fourth proportional to 20,889.92, 31,339.44 and 8,410.37 is: 12,617.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.92 : 31,339.44 = 8,410.37 : x
  2. Step 2: Convert to fraction form
    20,889.92/31,339.44 = 8,410.37/x
  3. Step 3: Cross multiply
    20,889.92x = 31,339.44 × 8,410.37
  4. Step 4: Simplify right side
    20,889.92x = 263,576,129.30
  5. Step 5: Solve for x
    x = 263,576,129.30/20,889.92
  6. Step 6: Final answer
    x = 12,617.38

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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.