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Finding the Fourth Proportional to 13,682.16, 18,881.38 and 7,394.53

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Solution

The fourth proportional to 13,682.16, 18,881.38 and 7,394.53 is: 10,204.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,682.16 : 18,881.38 = 7,394.53 : x
  2. Step 2: Convert to fraction form
    13,682.16/18,881.38 = 7,394.53/x
  3. Step 3: Cross multiply
    13,682.16x = 18,881.38 × 7,394.53
  4. Step 4: Simplify right side
    13,682.16x = 139,618,893.88
  5. Step 5: Solve for x
    x = 139,618,893.88/13,682.16
  6. Step 6: Final answer
    x = 10,204.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.