Home / 38,105.58-57,131.64-20,586.90

Finding the Fourth Proportional to 38,105.58, 57,131.64 and 20,586.90

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Solution

The fourth proportional to 38,105.58, 57,131.64 and 20,586.90 is: 30,865.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,105.58 : 57,131.64 = 20,586.90 : x
  2. Step 2: Convert to fraction form
    38,105.58/57,131.64 = 20,586.90/x
  3. Step 3: Cross multiply
    38,105.58x = 57,131.64 × 20,586.90
  4. Step 4: Simplify right side
    38,105.58x = 1,176,163,359.52
  5. Step 5: Solve for x
    x = 1,176,163,359.52/38,105.58
  6. Step 6: Final answer
    x = 30,865.91

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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.