Home / 20,586.10-30,879.06-5,003.78

Finding the Fourth Proportional to 20,586.10, 30,879.06 and 5,003.78

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Solution

The fourth proportional to 20,586.10, 30,879.06 and 5,003.78 is: 7,505.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.10 : 30,879.06 = 5,003.78 : x
  2. Step 2: Convert to fraction form
    20,586.10/30,879.06 = 5,003.78/x
  3. Step 3: Cross multiply
    20,586.10x = 30,879.06 × 5,003.78
  4. Step 4: Simplify right side
    20,586.10x = 154,512,022.85
  5. Step 5: Solve for x
    x = 154,512,022.85/20,586.10
  6. Step 6: Final answer
    x = 7,505.65

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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.