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Finding the Fourth Proportional to 18,448.22, 25,428.18 and 13,072.46

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Solution

The fourth proportional to 18,448.22, 25,428.18 and 13,072.46 is: 18,018.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,448.22 : 25,428.18 = 13,072.46 : x
  2. Step 2: Convert to fraction form
    18,448.22/25,428.18 = 13,072.46/x
  3. Step 3: Cross multiply
    18,448.22x = 25,428.18 × 13,072.46
  4. Step 4: Simplify right side
    18,448.22x = 332,408,865.92
  5. Step 5: Solve for x
    x = 332,408,865.92/18,448.22
  6. Step 6: Final answer
    x = 18,018.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.