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Finding the Fourth Proportional to 18,123.64, 27,185.46 and 4,976.08

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Solution

The fourth proportional to 18,123.64, 27,185.46 and 4,976.08 is: 7,464.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.64 : 27,185.46 = 4,976.08 : x
  2. Step 2: Convert to fraction form
    18,123.64/27,185.46 = 4,976.08/x
  3. Step 3: Cross multiply
    18,123.64x = 27,185.46 × 4,976.08
  4. Step 4: Simplify right side
    18,123.64x = 135,277,023.80
  5. Step 5: Solve for x
    x = 135,277,023.80/18,123.64
  6. Step 6: Final answer
    x = 7,464.12

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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.