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Finding the Fourth Proportional to 13,974.90, 20,957.90 and 4,613.18

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Solution

The fourth proportional to 13,974.90, 20,957.90 and 4,613.18 is: 6,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,974.90 : 20,957.90 = 4,613.18 : x
  2. Step 2: Convert to fraction form
    13,974.90/20,957.90 = 4,613.18/x
  3. Step 3: Cross multiply
    13,974.90x = 20,957.90 × 4,613.18
  4. Step 4: Simplify right side
    13,974.90x = 96,682,542.06
  5. Step 5: Solve for x
    x = 96,682,542.06/13,974.90
  6. Step 6: Final answer
    x = 6,918.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.