Home / 13,255.20-19,885.20-6,664.80

Finding the Fourth Proportional to 13,255.20, 19,885.20 and 6,664.80

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Solution

The fourth proportional to 13,255.20, 19,885.20 and 6,664.80 is: 9,998.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.20 : 19,885.20 = 6,664.80 : x
  2. Step 2: Convert to fraction form
    13,255.20/19,885.20 = 6,664.80/x
  3. Step 3: Cross multiply
    13,255.20x = 19,885.20 × 6,664.80
  4. Step 4: Simplify right side
    13,255.20x = 132,530,880.96
  5. Step 5: Solve for x
    x = 132,530,880.96/13,255.20
  6. Step 6: Final answer
    x = 9,998.41

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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.