Home / 11,980.94-17,979.81-4,961.07

Finding the Fourth Proportional to 11,980.94, 17,979.81 and 4,961.07

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Solution

The fourth proportional to 11,980.94, 17,979.81 and 4,961.07 is: 7,445.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,980.94 : 17,979.81 = 4,961.07 : x
  2. Step 2: Convert to fraction form
    11,980.94/17,979.81 = 4,961.07/x
  3. Step 3: Cross multiply
    11,980.94x = 17,979.81 × 4,961.07
  4. Step 4: Simplify right side
    11,980.94x = 89,199,172.72
  5. Step 5: Solve for x
    x = 89,199,172.72/11,980.94
  6. Step 6: Final answer
    x = 7,445.09

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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.