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Finding the Fourth Proportional to 18,676.20, 28,014.30 and 18,546.60

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Solution

The fourth proportional to 18,676.20, 28,014.30 and 18,546.60 is: 27,819.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676.20 : 28,014.30 = 18,546.60 : x
  2. Step 2: Convert to fraction form
    18,676.20/28,014.30 = 18,546.60/x
  3. Step 3: Cross multiply
    18,676.20x = 28,014.30 × 18,546.60
  4. Step 4: Simplify right side
    18,676.20x = 519,570,016.38
  5. Step 5: Solve for x
    x = 519,570,016.38/18,676.20
  6. Step 6: Final answer
    x = 27,819.90

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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.