Home / 11,991.16-17,986.10-3,671.18

Finding the Fourth Proportional to 11,991.16, 17,986.10 and 3,671.18

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Solution

The fourth proportional to 11,991.16, 17,986.10 and 3,671.18 is: 5,506.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.16 : 17,986.10 = 3,671.18 : x
  2. Step 2: Convert to fraction form
    11,991.16/17,986.10 = 3,671.18/x
  3. Step 3: Cross multiply
    11,991.16x = 17,986.10 × 3,671.18
  4. Step 4: Simplify right side
    11,991.16x = 66,030,210.60
  5. Step 5: Solve for x
    x = 66,030,210.60/11,991.16
  6. Step 6: Final answer
    x = 5,506.57

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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.