Home / 11,981.24-17,974.80-3,661.40

Finding the Fourth Proportional to 11,981.24, 17,974.80 and 3,661.40

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Solution

The fourth proportional to 11,981.24, 17,974.80 and 3,661.40 is: 5,493.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.24 : 17,974.80 = 3,661.40 : x
  2. Step 2: Convert to fraction form
    11,981.24/17,974.80 = 3,661.40/x
  3. Step 3: Cross multiply
    11,981.24x = 17,974.80 × 3,661.40
  4. Step 4: Simplify right side
    11,981.24x = 65,812,932.72
  5. Step 5: Solve for x
    x = 65,812,932.72/11,981.24
  6. Step 6: Final answer
    x = 5,493.00

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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.