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Finding the Fourth Proportional to 18,266.58, 27,401.49 and 5,119.11

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Solution

The fourth proportional to 18,266.58, 27,401.49 and 5,119.11 is: 7,679.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,266.58 : 27,401.49 = 5,119.11 : x
  2. Step 2: Convert to fraction form
    18,266.58/27,401.49 = 5,119.11/x
  3. Step 3: Cross multiply
    18,266.58x = 27,401.49 × 5,119.11
  4. Step 4: Simplify right side
    18,266.58x = 140,271,241.47
  5. Step 5: Solve for x
    x = 140,271,241.47/18,266.58
  6. Step 6: Final answer
    x = 7,679.12

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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.