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Finding the Fourth Proportional to 18,704.46, 28,043.73 and 8,310.54

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Solution

The fourth proportional to 18,704.46, 28,043.73 and 8,310.54 is: 12,460.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.46 : 28,043.73 = 8,310.54 : x
  2. Step 2: Convert to fraction form
    18,704.46/28,043.73 = 8,310.54/x
  3. Step 3: Cross multiply
    18,704.46x = 28,043.73 × 8,310.54
  4. Step 4: Simplify right side
    18,704.46x = 233,058,539.91
  5. Step 5: Solve for x
    x = 233,058,539.91/18,704.46
  6. Step 6: Final answer
    x = 12,460.05

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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.