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Finding the Fourth Proportional to 18,671.48, 28,008.24 and 7,576.52

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Solution

The fourth proportional to 18,671.48, 28,008.24 and 7,576.52 is: 11,365.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.48 : 28,008.24 = 7,576.52 : x
  2. Step 2: Convert to fraction form
    18,671.48/28,008.24 = 7,576.52/x
  3. Step 3: Cross multiply
    18,671.48x = 28,008.24 × 7,576.52
  4. Step 4: Simplify right side
    18,671.48x = 212,204,990.52
  5. Step 5: Solve for x
    x = 212,204,990.52/18,671.48
  6. Step 6: Final answer
    x = 11,365.19

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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.