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Finding the Fourth Proportional to 13,702.59, 20,553.71 and 3,314.25

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Solution

The fourth proportional to 13,702.59, 20,553.71 and 3,314.25 is: 4,971.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,702.59 : 20,553.71 = 3,314.25 : x
  2. Step 2: Convert to fraction form
    13,702.59/20,553.71 = 3,314.25/x
  3. Step 3: Cross multiply
    13,702.59x = 20,553.71 × 3,314.25
  4. Step 4: Simplify right side
    13,702.59x = 68,120,116.80
  5. Step 5: Solve for x
    x = 68,120,116.80/13,702.59
  6. Step 6: Final answer
    x = 4,971.33

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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.