Home / 20,313.92-28,033.08-11,361.38

Finding the Fourth Proportional to 20,313.92, 28,033.08 and 11,361.38

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Solution

The fourth proportional to 20,313.92, 28,033.08 and 11,361.38 is: 15,678.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.92 : 28,033.08 = 11,361.38 : x
  2. Step 2: Convert to fraction form
    20,313.92/28,033.08 = 11,361.38/x
  3. Step 3: Cross multiply
    20,313.92x = 28,033.08 × 11,361.38
  4. Step 4: Simplify right side
    20,313.92x = 318,494,474.45
  5. Step 5: Solve for x
    x = 318,494,474.45/20,313.92
  6. Step 6: Final answer
    x = 15,678.63

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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.