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Finding the Fourth Proportional to 22,065.62, 30,450.94 and 13,119.98

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Solution

The fourth proportional to 22,065.62, 30,450.94 and 13,119.98 is: 18,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,065.62 : 30,450.94 = 13,119.98 : x
  2. Step 2: Convert to fraction form
    22,065.62/30,450.94 = 13,119.98/x
  3. Step 3: Cross multiply
    22,065.62x = 30,450.94 × 13,119.98
  4. Step 4: Simplify right side
    22,065.62x = 399,515,538.73
  5. Step 5: Solve for x
    x = 399,515,538.73/22,065.62
  6. Step 6: Final answer
    x = 18,105.80

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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.