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Finding the Fourth Proportional to 12,172.28, 16,797.24 and 7,392.74

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Solution

The fourth proportional to 12,172.28, 16,797.24 and 7,392.74 is: 10,201.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.28 : 16,797.24 = 7,392.74 : x
  2. Step 2: Convert to fraction form
    12,172.28/16,797.24 = 7,392.74/x
  3. Step 3: Cross multiply
    12,172.28x = 16,797.24 × 7,392.74
  4. Step 4: Simplify right side
    12,172.28x = 124,177,544.05
  5. Step 5: Solve for x
    x = 124,177,544.05/12,172.28
  6. Step 6: Final answer
    x = 10,201.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.