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Finding the Fourth Proportional to 17,114.40, 25,661.84 and 8,787.60

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Solution

The fourth proportional to 17,114.40, 25,661.84 and 8,787.60 is: 13,176.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,114.40 : 25,661.84 = 8,787.60 : x
  2. Step 2: Convert to fraction form
    17,114.40/25,661.84 = 8,787.60/x
  3. Step 3: Cross multiply
    17,114.40x = 25,661.84 × 8,787.60
  4. Step 4: Simplify right side
    17,114.40x = 225,505,985.18
  5. Step 5: Solve for x
    x = 225,505,985.18/17,114.40
  6. Step 6: Final answer
    x = 13,176.39

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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.