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Finding the Fourth Proportional to 13,801.02, 20,702.63 and 4,918.29

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Solution

The fourth proportional to 13,801.02, 20,702.63 and 4,918.29 is: 7,377.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801.02 : 20,702.63 = 4,918.29 : x
  2. Step 2: Convert to fraction form
    13,801.02/20,702.63 = 4,918.29/x
  3. Step 3: Cross multiply
    13,801.02x = 20,702.63 × 4,918.29
  4. Step 4: Simplify right side
    13,801.02x = 101,821,538.10
  5. Step 5: Solve for x
    x = 101,821,538.10/13,801.02
  6. Step 6: Final answer
    x = 7,377.83

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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.