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Finding the Fourth Proportional to 22,245.78, 30,699.17 and 12,174.22

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Solution

The fourth proportional to 22,245.78, 30,699.17 and 12,174.22 is: 16,800.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,245.78 : 30,699.17 = 12,174.22 : x
  2. Step 2: Convert to fraction form
    22,245.78/30,699.17 = 12,174.22/x
  3. Step 3: Cross multiply
    22,245.78x = 30,699.17 × 12,174.22
  4. Step 4: Simplify right side
    22,245.78x = 373,738,449.40
  5. Step 5: Solve for x
    x = 373,738,449.40/22,245.78
  6. Step 6: Final answer
    x = 16,800.42

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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.