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Finding the Fourth Proportional to 13,879.23, 20,822.18 and 4,019.19

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Solution

The fourth proportional to 13,879.23, 20,822.18 and 4,019.19 is: 6,029.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.23 : 20,822.18 = 4,019.19 : x
  2. Step 2: Convert to fraction form
    13,879.23/20,822.18 = 4,019.19/x
  3. Step 3: Cross multiply
    13,879.23x = 20,822.18 × 4,019.19
  4. Step 4: Simplify right side
    13,879.23x = 83,688,297.63
  5. Step 5: Solve for x
    x = 83,688,297.63/13,879.23
  6. Step 6: Final answer
    x = 6,029.75

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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.