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Finding the Fourth Proportional to 18,644.95, 27,947.15 and 9,291.92

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Solution

The fourth proportional to 18,644.95, 27,947.15 and 9,291.92 is: 13,927.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644.95 : 27,947.15 = 9,291.92 : x
  2. Step 2: Convert to fraction form
    18,644.95/27,947.15 = 9,291.92/x
  3. Step 3: Cross multiply
    18,644.95x = 27,947.15 × 9,291.92
  4. Step 4: Simplify right side
    18,644.95x = 259,682,635.57
  5. Step 5: Solve for x
    x = 259,682,635.57/18,644.95
  6. Step 6: Final answer
    x = 13,927.78

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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.