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Finding the Fourth Proportional to 18,141.69, 27,211.83 and 4,993.71

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Solution

The fourth proportional to 18,141.69, 27,211.83 and 4,993.71 is: 7,490.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,141.69 : 27,211.83 = 4,993.71 : x
  2. Step 2: Convert to fraction form
    18,141.69/27,211.83 = 4,993.71/x
  3. Step 3: Cross multiply
    18,141.69x = 27,211.83 × 4,993.71
  4. Step 4: Simplify right side
    18,141.69x = 135,887,987.59
  5. Step 5: Solve for x
    x = 135,887,987.59/18,141.69
  6. Step 6: Final answer
    x = 7,490.37

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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.