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Finding the Fourth Proportional to 18,455.70, 27,687.54 and 5,976.98

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Solution

The fourth proportional to 18,455.70, 27,687.54 and 5,976.98 is: 8,966.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455.70 : 27,687.54 = 5,976.98 : x
  2. Step 2: Convert to fraction form
    18,455.70/27,687.54 = 5,976.98/x
  3. Step 3: Cross multiply
    18,455.70x = 27,687.54 × 5,976.98
  4. Step 4: Simplify right side
    18,455.70x = 165,487,734.39
  5. Step 5: Solve for x
    x = 165,487,734.39/18,455.70
  6. Step 6: Final answer
    x = 8,966.75

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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.