Home / 39,775.99-54,891.07-21,872.16

Finding the Fourth Proportional to 39,775.99, 54,891.07 and 21,872.16

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Solution

The fourth proportional to 39,775.99, 54,891.07 and 21,872.16 is: 30,183.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,775.99 : 54,891.07 = 21,872.16 : x
  2. Step 2: Convert to fraction form
    39,775.99/54,891.07 = 21,872.16/x
  3. Step 3: Cross multiply
    39,775.99x = 54,891.07 × 21,872.16
  4. Step 4: Simplify right side
    39,775.99x = 1,200,586,183.06
  5. Step 5: Solve for x
    x = 1,200,586,183.06/39,775.99
  6. Step 6: Final answer
    x = 30,183.69

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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.