Home / 20,400.44-30,571.49-11,617.20

Finding the Fourth Proportional to 20,400.44, 30,571.49 and 11,617.20

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Solution

The fourth proportional to 20,400.44, 30,571.49 and 11,617.20 is: 17,409.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.44 : 30,571.49 = 11,617.20 : x
  2. Step 2: Convert to fraction form
    20,400.44/30,571.49 = 11,617.20/x
  3. Step 3: Cross multiply
    20,400.44x = 30,571.49 × 11,617.20
  4. Step 4: Simplify right side
    20,400.44x = 355,155,055.54
  5. Step 5: Solve for x
    x = 355,155,055.54/20,400.44
  6. Step 6: Final answer
    x = 17,409.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.