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Finding the Fourth Proportional to 18,240.42, 27,360.90 and 12,040.14

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Solution

The fourth proportional to 18,240.42, 27,360.90 and 12,040.14 is: 18,060.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,240.42 : 27,360.90 = 12,040.14 : x
  2. Step 2: Convert to fraction form
    18,240.42/27,360.90 = 12,040.14/x
  3. Step 3: Cross multiply
    18,240.42x = 27,360.90 × 12,040.14
  4. Step 4: Simplify right side
    18,240.42x = 329,429,066.53
  5. Step 5: Solve for x
    x = 329,429,066.53/18,240.42
  6. Step 6: Final answer
    x = 18,060.39

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.