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Finding the Fourth Proportional to 18,491.36, 27,750.40 and 7,401.14

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Solution

The fourth proportional to 18,491.36, 27,750.40 and 7,401.14 is: 11,107.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.36 : 27,750.40 = 7,401.14 : x
  2. Step 2: Convert to fraction form
    18,491.36/27,750.40 = 7,401.14/x
  3. Step 3: Cross multiply
    18,491.36x = 27,750.40 × 7,401.14
  4. Step 4: Simplify right side
    18,491.36x = 205,384,595.46
  5. Step 5: Solve for x
    x = 205,384,595.46/18,491.36
  6. Step 6: Final answer
    x = 11,107.06

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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.