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Finding the Fourth Proportional to 18,656.28, 27,984.60 and 8,800.20

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Solution

The fourth proportional to 18,656.28, 27,984.60 and 8,800.20 is: 13,200.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.28 : 27,984.60 = 8,800.20 : x
  2. Step 2: Convert to fraction form
    18,656.28/27,984.60 = 8,800.20/x
  3. Step 3: Cross multiply
    18,656.28x = 27,984.60 × 8,800.20
  4. Step 4: Simplify right side
    18,656.28x = 246,270,076.92
  5. Step 5: Solve for x
    x = 246,270,076.92/18,656.28
  6. Step 6: Final answer
    x = 13,200.38

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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.