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Finding the Fourth Proportional to 18,035.80, 27,054.51 and 6,938.54

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Solution

The fourth proportional to 18,035.80, 27,054.51 and 6,938.54 is: 10,408.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,035.80 : 27,054.51 = 6,938.54 : x
  2. Step 2: Convert to fraction form
    18,035.80/27,054.51 = 6,938.54/x
  3. Step 3: Cross multiply
    18,035.80x = 27,054.51 × 6,938.54
  4. Step 4: Simplify right side
    18,035.80x = 187,718,799.82
  5. Step 5: Solve for x
    x = 187,718,799.82/18,035.80
  6. Step 6: Final answer
    x = 10,408.12

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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.