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Finding the Fourth Proportional to 18,090.99, 27,136.94 and 4,943.48

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Solution

The fourth proportional to 18,090.99, 27,136.94 and 4,943.48 is: 7,415.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,090.99 : 27,136.94 = 4,943.48 : x
  2. Step 2: Convert to fraction form
    18,090.99/27,136.94 = 4,943.48/x
  3. Step 3: Cross multiply
    18,090.99x = 27,136.94 × 4,943.48
  4. Step 4: Simplify right side
    18,090.99x = 134,150,759.75
  5. Step 5: Solve for x
    x = 134,150,759.75/18,090.99
  6. Step 6: Final answer
    x = 7,415.34

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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.