Home / 11,991.32-17,989.02-3,670.46

Finding the Fourth Proportional to 11,991.32, 17,989.02 and 3,670.46

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Solution

The fourth proportional to 11,991.32, 17,989.02 and 3,670.46 is: 5,506.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.32 : 17,989.02 = 3,670.46 : x
  2. Step 2: Convert to fraction form
    11,991.32/17,989.02 = 3,670.46/x
  3. Step 3: Cross multiply
    11,991.32x = 17,989.02 × 3,670.46
  4. Step 4: Simplify right side
    11,991.32x = 66,027,978.35
  5. Step 5: Solve for x
    x = 66,027,978.35/11,991.32
  6. Step 6: Final answer
    x = 5,506.31

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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.