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Finding the Fourth Proportional to 18,141.88, 27,212.08 and 4,993.89

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Solution

The fourth proportional to 18,141.88, 27,212.08 and 4,993.89 is: 7,490.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,141.88 : 27,212.08 = 4,993.89 : x
  2. Step 2: Convert to fraction form
    18,141.88/27,212.08 = 4,993.89/x
  3. Step 3: Cross multiply
    18,141.88x = 27,212.08 × 4,993.89
  4. Step 4: Simplify right side
    18,141.88x = 135,894,134.19
  5. Step 5: Solve for x
    x = 135,894,134.19/18,141.88
  6. Step 6: Final answer
    x = 7,490.63

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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.