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Finding the Fourth Proportional to 18,695.73, 28,043.78 and 5,548.11

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Solution

The fourth proportional to 18,695.73, 28,043.78 and 5,548.11 is: 8,322.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695.73 : 28,043.78 = 5,548.11 : x
  2. Step 2: Convert to fraction form
    18,695.73/28,043.78 = 5,548.11/x
  3. Step 3: Cross multiply
    18,695.73x = 28,043.78 × 5,548.11
  4. Step 4: Simplify right side
    18,695.73x = 155,589,843.35
  5. Step 5: Solve for x
    x = 155,589,843.35/18,695.73
  6. Step 6: Final answer
    x = 8,322.21

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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.