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Finding the Fourth Proportional to 13,627.08, 18,806.04 and 8,321.04

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Solution

The fourth proportional to 13,627.08, 18,806.04 and 8,321.04 is: 11,483.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,627.08 : 18,806.04 = 8,321.04 : x
  2. Step 2: Convert to fraction form
    13,627.08/18,806.04 = 8,321.04/x
  3. Step 3: Cross multiply
    13,627.08x = 18,806.04 × 8,321.04
  4. Step 4: Simplify right side
    13,627.08x = 156,485,811.08
  5. Step 5: Solve for x
    x = 156,485,811.08/13,627.08
  6. Step 6: Final answer
    x = 11,483.44

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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.