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Finding the Fourth Proportional to 18,745.02, 28,098 and 8,872.56

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Solution

The fourth proportional to 18,745.02, 28,098 and 8,872.56 is: 13,299.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.02 : 28,098 = 8,872.56 : x
  2. Step 2: Convert to fraction form
    18,745.02/28,098 = 8,872.56/x
  3. Step 3: Cross multiply
    18,745.02x = 28,098 × 8,872.56
  4. Step 4: Simplify right side
    18,745.02x = 249,301,190.88
  5. Step 5: Solve for x
    x = 249,301,190.88/18,745.02
  6. Step 6: Final answer
    x = 13,299.60

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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.