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Finding the Fourth Proportional to 18,261.12, 27,391.70 and 5,949.12

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Solution

The fourth proportional to 18,261.12, 27,391.70 and 5,949.12 is: 8,923.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,261.12 : 27,391.70 = 5,949.12 : x
  2. Step 2: Convert to fraction form
    18,261.12/27,391.70 = 5,949.12/x
  3. Step 3: Cross multiply
    18,261.12x = 27,391.70 × 5,949.12
  4. Step 4: Simplify right side
    18,261.12x = 162,956,510.30
  5. Step 5: Solve for x
    x = 162,956,510.30/18,261.12
  6. Step 6: Final answer
    x = 8,923.69

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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.