Home / 39,813.72-54,946.26-21,912.12

Finding the Fourth Proportional to 39,813.72, 54,946.26 and 21,912.12

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Solution

The fourth proportional to 39,813.72, 54,946.26 and 21,912.12 is: 30,240.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,813.72 : 54,946.26 = 21,912.12 : x
  2. Step 2: Convert to fraction form
    39,813.72/54,946.26 = 21,912.12/x
  3. Step 3: Cross multiply
    39,813.72x = 54,946.26 × 21,912.12
  4. Step 4: Simplify right side
    39,813.72x = 1,203,989,042.67
  5. Step 5: Solve for x
    x = 1,203,989,042.67/39,813.72
  6. Step 6: Final answer
    x = 30,240.56

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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.