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Finding the Fourth Proportional to 13,600.41, 18,768.42 and 8,295.21

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Solution

The fourth proportional to 13,600.41, 18,768.42 and 8,295.21 is: 11,447.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600.41 : 18,768.42 = 8,295.21 : x
  2. Step 2: Convert to fraction form
    13,600.41/18,768.42 = 8,295.21/x
  3. Step 3: Cross multiply
    13,600.41x = 18,768.42 × 8,295.21
  4. Step 4: Simplify right side
    13,600.41x = 155,687,985.27
  5. Step 5: Solve for x
    x = 155,687,985.27/13,600.41
  6. Step 6: Final answer
    x = 11,447.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.