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Finding the Fourth Proportional to 11,114.40, 16,628.40 and 7,226.40

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Solution

The fourth proportional to 11,114.40, 16,628.40 and 7,226.40 is: 10,811.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,114.40 : 16,628.40 = 7,226.40 : x
  2. Step 2: Convert to fraction form
    11,114.40/16,628.40 = 7,226.40/x
  3. Step 3: Cross multiply
    11,114.40x = 16,628.40 × 7,226.40
  4. Step 4: Simplify right side
    11,114.40x = 120,163,469.76
  5. Step 5: Solve for x
    x = 120,163,469.76/11,114.40
  6. Step 6: Final answer
    x = 10,811.51

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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.