Home / 20,313.21-28,034.84-11,361.21

Finding the Fourth Proportional to 20,313.21, 28,034.84 and 11,361.21

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Solution

The fourth proportional to 20,313.21, 28,034.84 and 11,361.21 is: 15,679.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.21 : 28,034.84 = 11,361.21 : x
  2. Step 2: Convert to fraction form
    20,313.21/28,034.84 = 11,361.21/x
  3. Step 3: Cross multiply
    20,313.21x = 28,034.84 × 11,361.21
  4. Step 4: Simplify right side
    20,313.21x = 318,509,704.56
  5. Step 5: Solve for x
    x = 318,509,704.56/20,313.21
  6. Step 6: Final answer
    x = 15,679.93

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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.