Home / 11,989.10-17,986.41-3,670.34

Finding the Fourth Proportional to 11,989.10, 17,986.41 and 3,670.34

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Solution

The fourth proportional to 11,989.10, 17,986.41 and 3,670.34 is: 5,506.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.10 : 17,986.41 = 3,670.34 : x
  2. Step 2: Convert to fraction form
    11,989.10/17,986.41 = 3,670.34/x
  3. Step 3: Cross multiply
    11,989.10x = 17,986.41 × 3,670.34
  4. Step 4: Simplify right side
    11,989.10x = 66,016,150.15
  5. Step 5: Solve for x
    x = 66,016,150.15/11,989.10
  6. Step 6: Final answer
    x = 5,506.35

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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.