Home / 13,869.84-20,806.52-5,435.28

Finding the Fourth Proportional to 13,869.84, 20,806.52 and 5,435.28

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Solution

The fourth proportional to 13,869.84, 20,806.52 and 5,435.28 is: 8,153.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.84 : 20,806.52 = 5,435.28 : x
  2. Step 2: Convert to fraction form
    13,869.84/20,806.52 = 5,435.28/x
  3. Step 3: Cross multiply
    13,869.84x = 20,806.52 × 5,435.28
  4. Step 4: Simplify right side
    13,869.84x = 113,089,234.85
  5. Step 5: Solve for x
    x = 113,089,234.85/13,869.84
  6. Step 6: Final answer
    x = 8,153.61

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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.