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Finding the Fourth Proportional to 18,018.48, 27,027.72 and 15,361.68

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Solution

The fourth proportional to 18,018.48, 27,027.72 and 15,361.68 is: 23,042.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,018.48 : 27,027.72 = 15,361.68 : x
  2. Step 2: Convert to fraction form
    18,018.48/27,027.72 = 15,361.68/x
  3. Step 3: Cross multiply
    18,018.48x = 27,027.72 × 15,361.68
  4. Step 4: Simplify right side
    18,018.48x = 415,191,185.77
  5. Step 5: Solve for x
    x = 415,191,185.77/18,018.48
  6. Step 6: Final answer
    x = 23,042.52

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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.