Home / 11,384.60-17,079.90-3,989.06

Finding the Fourth Proportional to 11,384.60, 17,079.90 and 3,989.06

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Solution

The fourth proportional to 11,384.60, 17,079.90 and 3,989.06 is: 5,984.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,384.60 : 17,079.90 = 3,989.06 : x
  2. Step 2: Convert to fraction form
    11,384.60/17,079.90 = 3,989.06/x
  3. Step 3: Cross multiply
    11,384.60x = 17,079.90 × 3,989.06
  4. Step 4: Simplify right side
    11,384.60x = 68,132,745.89
  5. Step 5: Solve for x
    x = 68,132,745.89/11,384.60
  6. Step 6: Final answer
    x = 5,984.64

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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.