Home / 39,589.16-54,631.56-21,684.31

Finding the Fourth Proportional to 39,589.16, 54,631.56 and 21,684.31

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Solution

The fourth proportional to 39,589.16, 54,631.56 and 21,684.31 is: 29,923.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,589.16 : 54,631.56 = 21,684.31 : x
  2. Step 2: Convert to fraction form
    39,589.16/54,631.56 = 21,684.31/x
  3. Step 3: Cross multiply
    39,589.16x = 54,631.56 × 21,684.31
  4. Step 4: Simplify right side
    39,589.16x = 1,184,647,627.56
  5. Step 5: Solve for x
    x = 1,184,647,627.56/39,589.16
  6. Step 6: Final answer
    x = 29,923.54

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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.