Home / 39,640.88-54,704.06-21,735.56

Finding the Fourth Proportional to 39,640.88, 54,704.06 and 21,735.56

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Solution

The fourth proportional to 39,640.88, 54,704.06 and 21,735.56 is: 29,994.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,640.88 : 54,704.06 = 21,735.56 : x
  2. Step 2: Convert to fraction form
    39,640.88/54,704.06 = 21,735.56/x
  3. Step 3: Cross multiply
    39,640.88x = 54,704.06 × 21,735.56
  4. Step 4: Simplify right side
    39,640.88x = 1,189,023,378.37
  5. Step 5: Solve for x
    x = 1,189,023,378.37/39,640.88
  6. Step 6: Final answer
    x = 29,994.88

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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.