Home / 11,169.20-16,734.60-7,271.60

Finding the Fourth Proportional to 11,169.20, 16,734.60 and 7,271.60

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Solution

The fourth proportional to 11,169.20, 16,734.60 and 7,271.60 is: 10,894.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,169.20 : 16,734.60 = 7,271.60 : x
  2. Step 2: Convert to fraction form
    11,169.20/16,734.60 = 7,271.60/x
  3. Step 3: Cross multiply
    11,169.20x = 16,734.60 × 7,271.60
  4. Step 4: Simplify right side
    11,169.20x = 121,687,317.36
  5. Step 5: Solve for x
    x = 121,687,317.36/11,169.20
  6. Step 6: Final answer
    x = 10,894.90

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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.