Home / 11,121.20-16,662.60-7,223.60

Finding the Fourth Proportional to 11,121.20, 16,662.60 and 7,223.60

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Solution

The fourth proportional to 11,121.20, 16,662.60 and 7,223.60 is: 10,822.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.20 : 16,662.60 = 7,223.60 : x
  2. Step 2: Convert to fraction form
    11,121.20/16,662.60 = 7,223.60/x
  3. Step 3: Cross multiply
    11,121.20x = 16,662.60 × 7,223.60
  4. Step 4: Simplify right side
    11,121.20x = 120,363,957.36
  5. Step 5: Solve for x
    x = 120,363,957.36/11,121.20
  6. Step 6: Final answer
    x = 10,822.93

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1.5x scale

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.