Home / 13,212.72-19,821.60-4,447.80

Finding the Fourth Proportional to 13,212.72, 19,821.60 and 4,447.80

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Solution

The fourth proportional to 13,212.72, 19,821.60 and 4,447.80 is: 6,672.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.72 : 19,821.60 = 4,447.80 : x
  2. Step 2: Convert to fraction form
    13,212.72/19,821.60 = 4,447.80/x
  3. Step 3: Cross multiply
    13,212.72x = 19,821.60 × 4,447.80
  4. Step 4: Simplify right side
    13,212.72x = 88,162,512.48
  5. Step 5: Solve for x
    x = 88,162,512.48/13,212.72
  6. Step 6: Final answer
    x = 6,672.55

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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.