Home / 11,886.06-17,827.70-3,121.65

Finding the Fourth Proportional to 11,886.06, 17,827.70 and 3,121.65

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Solution

The fourth proportional to 11,886.06, 17,827.70 and 3,121.65 is: 4,682.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,886.06 : 17,827.70 = 3,121.65 : x
  2. Step 2: Convert to fraction form
    11,886.06/17,827.70 = 3,121.65/x
  3. Step 3: Cross multiply
    11,886.06x = 17,827.70 × 3,121.65
  4. Step 4: Simplify right side
    11,886.06x = 55,651,824.10
  5. Step 5: Solve for x
    x = 55,651,824.10/11,886.06
  6. Step 6: Final answer
    x = 4,682.11

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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.