Home / 28,544.94-39,429.67-21,912.53

Finding the Fourth Proportional to 28,544.94, 39,429.67 and 21,912.53

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Solution

The fourth proportional to 28,544.94, 39,429.67 and 21,912.53 is: 30,268.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,544.94 : 39,429.67 = 21,912.53 : x
  2. Step 2: Convert to fraction form
    28,544.94/39,429.67 = 21,912.53/x
  3. Step 3: Cross multiply
    28,544.94x = 39,429.67 × 21,912.53
  4. Step 4: Simplify right side
    28,544.94x = 864,003,520.05
  5. Step 5: Solve for x
    x = 864,003,520.05/28,544.94
  6. Step 6: Final answer
    x = 30,268.18

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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.