Home / 20,361.21-28,097.79-11,286.19

Finding the Fourth Proportional to 20,361.21, 28,097.79 and 11,286.19

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Solution

The fourth proportional to 20,361.21, 28,097.79 and 11,286.19 is: 15,574.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.21 : 28,097.79 = 11,286.19 : x
  2. Step 2: Convert to fraction form
    20,361.21/28,097.79 = 11,286.19/x
  3. Step 3: Cross multiply
    20,361.21x = 28,097.79 × 11,286.19
  4. Step 4: Simplify right side
    20,361.21x = 317,116,996.52
  5. Step 5: Solve for x
    x = 317,116,996.52/20,361.21
  6. Step 6: Final answer
    x = 15,574.57

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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.