Home / 21,930.99-30,262.62-12,372.38

Finding the Fourth Proportional to 21,930.99, 30,262.62 and 12,372.38

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Solution

The fourth proportional to 21,930.99, 30,262.62 and 12,372.38 is: 17,072.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.99 : 30,262.62 = 12,372.38 : x
  2. Step 2: Convert to fraction form
    21,930.99/30,262.62 = 12,372.38/x
  3. Step 3: Cross multiply
    21,930.99x = 30,262.62 × 12,372.38
  4. Step 4: Simplify right side
    21,930.99x = 374,420,634.44
  5. Step 5: Solve for x
    x = 374,420,634.44/21,930.99
  6. Step 6: Final answer
    x = 17,072.67

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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.