Home / 11,289.72-16,928.48-3,391.16

Finding the Fourth Proportional to 11,289.72, 16,928.48 and 3,391.16

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Solution

The fourth proportional to 11,289.72, 16,928.48 and 3,391.16 is: 5,084.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.72 : 16,928.48 = 3,391.16 : x
  2. Step 2: Convert to fraction form
    11,289.72/16,928.48 = 3,391.16/x
  3. Step 3: Cross multiply
    11,289.72x = 16,928.48 × 3,391.16
  4. Step 4: Simplify right side
    11,289.72x = 57,407,184.24
  5. Step 5: Solve for x
    x = 57,407,184.24/11,289.72
  6. Step 6: Final answer
    x = 5,084.91

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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.