Home / 20,558.91-30,838.26-4,976.54

Finding the Fourth Proportional to 20,558.91, 30,838.26 and 4,976.54

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Solution

The fourth proportional to 20,558.91, 30,838.26 and 4,976.54 is: 7,464.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.91 : 30,838.26 = 4,976.54 : x
  2. Step 2: Convert to fraction form
    20,558.91/30,838.26 = 4,976.54/x
  3. Step 3: Cross multiply
    20,558.91x = 30,838.26 × 4,976.54
  4. Step 4: Simplify right side
    20,558.91x = 153,467,834.42
  5. Step 5: Solve for x
    x = 153,467,834.42/20,558.91
  6. Step 6: Final answer
    x = 7,464.78

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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.