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Finding the Fourth Proportional to 22,245.70, 30,698.80 and 12,174.03

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Solution

The fourth proportional to 22,245.70, 30,698.80 and 12,174.03 is: 16,800.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,245.70 : 30,698.80 = 12,174.03 : x
  2. Step 2: Convert to fraction form
    22,245.70/30,698.80 = 12,174.03/x
  3. Step 3: Cross multiply
    22,245.70x = 30,698.80 × 12,174.03
  4. Step 4: Simplify right side
    22,245.70x = 373,728,112.16
  5. Step 5: Solve for x
    x = 373,728,112.16/22,245.70
  6. Step 6: Final answer
    x = 16,800.02

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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.