Home / 13,418.92-20,125.32-5,099.86

Finding the Fourth Proportional to 13,418.92, 20,125.32 and 5,099.86

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Solution

The fourth proportional to 13,418.92, 20,125.32 and 5,099.86 is: 7,648.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.92 : 20,125.32 = 5,099.86 : x
  2. Step 2: Convert to fraction form
    13,418.92/20,125.32 = 5,099.86/x
  3. Step 3: Cross multiply
    13,418.92x = 20,125.32 × 5,099.86
  4. Step 4: Simplify right side
    13,418.92x = 102,636,314.46
  5. Step 5: Solve for x
    x = 102,636,314.46/13,418.92
  6. Step 6: Final answer
    x = 7,648.63

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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.