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Finding the Fourth Proportional to 11,467.40, 17,201.60 and 3,147.20

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Solution

The fourth proportional to 11,467.40, 17,201.60 and 3,147.20 is: 4,720.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,467.40 : 17,201.60 = 3,147.20 : x
  2. Step 2: Convert to fraction form
    11,467.40/17,201.60 = 3,147.20/x
  3. Step 3: Cross multiply
    11,467.40x = 17,201.60 × 3,147.20
  4. Step 4: Simplify right side
    11,467.40x = 54,136,875.52
  5. Step 5: Solve for x
    x = 54,136,875.52/11,467.40
  6. Step 6: Final answer
    x = 4,720.94

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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.