Home / 11,108.88-16,661.40-3,315.60

Finding the Fourth Proportional to 11,108.88, 16,661.40 and 3,315.60

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Solution

The fourth proportional to 11,108.88, 16,661.40 and 3,315.60 is: 4,972.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,108.88 : 16,661.40 = 3,315.60 : x
  2. Step 2: Convert to fraction form
    11,108.88/16,661.40 = 3,315.60/x
  3. Step 3: Cross multiply
    11,108.88x = 16,661.40 × 3,315.60
  4. Step 4: Simplify right side
    11,108.88x = 55,242,537.84
  5. Step 5: Solve for x
    x = 55,242,537.84/11,108.88
  6. Step 6: Final answer
    x = 4,972.83

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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.