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Finding the Fourth Proportional to 18,775.36, 25,771.96 and 16,603.30

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Solution

The fourth proportional to 18,775.36, 25,771.96 and 16,603.30 is: 22,790.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.36 : 25,771.96 = 16,603.30 : x
  2. Step 2: Convert to fraction form
    18,775.36/25,771.96 = 16,603.30/x
  3. Step 3: Cross multiply
    18,775.36x = 25,771.96 × 16,603.30
  4. Step 4: Simplify right side
    18,775.36x = 427,899,583.47
  5. Step 5: Solve for x
    x = 427,899,583.47/18,775.36
  6. Step 6: Final answer
    x = 22,790.49

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.