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Finding the Fourth Proportional to 13,745.44, 20,571.42 and 8,483.77

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Solution

The fourth proportional to 13,745.44, 20,571.42 and 8,483.77 is: 12,696.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.44 : 20,571.42 = 8,483.77 : x
  2. Step 2: Convert to fraction form
    13,745.44/20,571.42 = 8,483.77/x
  3. Step 3: Cross multiply
    13,745.44x = 20,571.42 × 8,483.77
  4. Step 4: Simplify right side
    13,745.44x = 174,523,247.28
  5. Step 5: Solve for x
    x = 174,523,247.28/13,745.44
  6. Step 6: Final answer
    x = 12,696.82

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1.5x scale

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.