Home / 11,989.74-17,987.34-3,670.41

Finding the Fourth Proportional to 11,989.74, 17,987.34 and 3,670.41

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Solution

The fourth proportional to 11,989.74, 17,987.34 and 3,670.41 is: 5,506.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.74 : 17,987.34 = 3,670.41 : x
  2. Step 2: Convert to fraction form
    11,989.74/17,987.34 = 3,670.41/x
  3. Step 3: Cross multiply
    11,989.74x = 17,987.34 × 3,670.41
  4. Step 4: Simplify right side
    11,989.74x = 66,020,912.61
  5. Step 5: Solve for x
    x = 66,020,912.61/11,989.74
  6. Step 6: Final answer
    x = 5,506.45

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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.