Home / 11,217.20-16,815.15-7,271.48

Finding the Fourth Proportional to 11,217.20, 16,815.15 and 7,271.48

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Solution

The fourth proportional to 11,217.20, 16,815.15 and 7,271.48 is: 10,900.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,217.20 : 16,815.15 = 7,271.48 : x
  2. Step 2: Convert to fraction form
    11,217.20/16,815.15 = 7,271.48/x
  3. Step 3: Cross multiply
    11,217.20x = 16,815.15 × 7,271.48
  4. Step 4: Simplify right side
    11,217.20x = 122,270,942.85
  5. Step 5: Solve for x
    x = 122,270,942.85/11,217.20
  6. Step 6: Final answer
    x = 10,900.31

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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.