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Finding the Fourth Proportional to 18,021.78, 27,049.95 and 10,237.14

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Solution

The fourth proportional to 18,021.78, 27,049.95 and 10,237.14 is: 15,365.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,021.78 : 27,049.95 = 10,237.14 : x
  2. Step 2: Convert to fraction form
    18,021.78/27,049.95 = 10,237.14/x
  3. Step 3: Cross multiply
    18,021.78x = 27,049.95 × 10,237.14
  4. Step 4: Simplify right side
    18,021.78x = 276,914,125.14
  5. Step 5: Solve for x
    x = 276,914,125.14/18,021.78
  6. Step 6: Final answer
    x = 15,365.53

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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.