Home / 20,790.28-31,198.08-10,936.60

Finding the Fourth Proportional to 20,790.28, 31,198.08 and 10,936.60

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Solution

The fourth proportional to 20,790.28, 31,198.08 and 10,936.60 is: 16,411.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790.28 : 31,198.08 = 10,936.60 : x
  2. Step 2: Convert to fraction form
    20,790.28/31,198.08 = 10,936.60/x
  3. Step 3: Cross multiply
    20,790.28x = 31,198.08 × 10,936.60
  4. Step 4: Simplify right side
    20,790.28x = 341,200,921.73
  5. Step 5: Solve for x
    x = 341,200,921.73/20,790.28
  6. Step 6: Final answer
    x = 16,411.56

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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.