Home / 20,749.68-31,107.06-9,650.70

Finding the Fourth Proportional to 20,749.68, 31,107.06 and 9,650.70

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Solution

The fourth proportional to 20,749.68, 31,107.06 and 9,650.70 is: 14,467.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.68 : 31,107.06 = 9,650.70 : x
  2. Step 2: Convert to fraction form
    20,749.68/31,107.06 = 9,650.70/x
  3. Step 3: Cross multiply
    20,749.68x = 31,107.06 × 9,650.70
  4. Step 4: Simplify right side
    20,749.68x = 300,204,903.94
  5. Step 5: Solve for x
    x = 300,204,903.94/20,749.68
  6. Step 6: Final answer
    x = 14,467.93

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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.