Home / 11,981.19-17,979.95-6,141.90

Finding the Fourth Proportional to 11,981.19, 17,979.95 and 6,141.90

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Solution

The fourth proportional to 11,981.19, 17,979.95 and 6,141.90 is: 9,217.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.19 : 17,979.95 = 6,141.90 : x
  2. Step 2: Convert to fraction form
    11,981.19/17,979.95 = 6,141.90/x
  3. Step 3: Cross multiply
    11,981.19x = 17,979.95 × 6,141.90
  4. Step 4: Simplify right side
    11,981.19x = 110,431,054.91
  5. Step 5: Solve for x
    x = 110,431,054.91/11,981.19
  6. Step 6: Final answer
    x = 9,217.04

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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.