Home / 13,879.35-20,822.67-5,114.34

Finding the Fourth Proportional to 13,879.35, 20,822.67 and 5,114.34

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Solution

The fourth proportional to 13,879.35, 20,822.67 and 5,114.34 is: 7,672.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.35 : 20,822.67 = 5,114.34 : x
  2. Step 2: Convert to fraction form
    13,879.35/20,822.67 = 5,114.34/x
  3. Step 3: Cross multiply
    13,879.35x = 20,822.67 × 5,114.34
  4. Step 4: Simplify right side
    13,879.35x = 106,494,214.09
  5. Step 5: Solve for x
    x = 106,494,214.09/13,879.35
  6. Step 6: Final answer
    x = 7,672.85

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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.