Home / 11,981.54-17,972.30-3,661.10

Finding the Fourth Proportional to 11,981.54, 17,972.30 and 3,661.10

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Solution

The fourth proportional to 11,981.54, 17,972.30 and 3,661.10 is: 5,491.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.54 : 17,972.30 = 3,661.10 : x
  2. Step 2: Convert to fraction form
    11,981.54/17,972.30 = 3,661.10/x
  3. Step 3: Cross multiply
    11,981.54x = 17,972.30 × 3,661.10
  4. Step 4: Simplify right side
    11,981.54x = 65,798,279.36
  5. Step 5: Solve for x
    x = 65,798,279.36/11,981.54
  6. Step 6: Final answer
    x = 5,491.64

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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.