Home / 22,198-30,620.28-13,817.20

Finding the Fourth Proportional to 22,198, 30,620.28 and 13,817.20

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Solution

The fourth proportional to 22,198, 30,620.28 and 13,817.20 is: 19,059.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,198 : 30,620.28 = 13,817.20 : x
  2. Step 2: Convert to fraction form
    22,198/30,620.28 = 13,817.20/x
  3. Step 3: Cross multiply
    22,198x = 30,620.28 × 13,817.20
  4. Step 4: Simplify right side
    22,198x = 423,086,532.82
  5. Step 5: Solve for x
    x = 423,086,532.82/22,198
  6. Step 6: Final answer
    x = 19,059.67

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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.