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Finding the Fourth Proportional to 21,792.38, 30,074.02 and 11,856.38

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Solution

The fourth proportional to 21,792.38, 30,074.02 and 11,856.38 is: 16,362.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,792.38 : 30,074.02 = 11,856.38 : x
  2. Step 2: Convert to fraction form
    21,792.38/30,074.02 = 11,856.38/x
  3. Step 3: Cross multiply
    21,792.38x = 30,074.02 × 11,856.38
  4. Step 4: Simplify right side
    21,792.38x = 356,568,829.24
  5. Step 5: Solve for x
    x = 356,568,829.24/21,792.38
  6. Step 6: Final answer
    x = 16,362.09

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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.