Home / 39,818.23-54,949.41-21,912.77

Finding the Fourth Proportional to 39,818.23, 54,949.41 and 21,912.77

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Solution

The fourth proportional to 39,818.23, 54,949.41 and 21,912.77 is: 30,239.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,818.23 : 54,949.41 = 21,912.77 : x
  2. Step 2: Convert to fraction form
    39,818.23/54,949.41 = 21,912.77/x
  3. Step 3: Cross multiply
    39,818.23x = 54,949.41 × 21,912.77
  4. Step 4: Simplify right side
    39,818.23x = 1,204,093,920.34
  5. Step 5: Solve for x
    x = 1,204,093,920.34/39,818.23
  6. Step 6: Final answer
    x = 30,239.77

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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.