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Finding the Fourth Proportional to 18,137.00, 27,189.09 and 6,447.48

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Solution

The fourth proportional to 18,137.00, 27,189.09 and 6,447.48 is: 9,665.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,137.00 : 27,189.09 = 6,447.48 : x
  2. Step 2: Convert to fraction form
    18,137.00/27,189.09 = 6,447.48/x
  3. Step 3: Cross multiply
    18,137.00x = 27,189.09 × 6,447.48
  4. Step 4: Simplify right side
    18,137.00x = 175,301,113.99
  5. Step 5: Solve for x
    x = 175,301,113.99/18,137.00
  6. Step 6: Final answer
    x = 9,665.39

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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.