Home / 28,550.87-39,399.19-15,804.08

Finding the Fourth Proportional to 28,550.87, 39,399.19 and 15,804.08

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Solution

The fourth proportional to 28,550.87, 39,399.19 and 15,804.08 is: 21,809.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,550.87 : 39,399.19 = 15,804.08 : x
  2. Step 2: Convert to fraction form
    28,550.87/39,399.19 = 15,804.08/x
  3. Step 3: Cross multiply
    28,550.87x = 39,399.19 × 15,804.08
  4. Step 4: Simplify right side
    28,550.87x = 622,667,674.68
  5. Step 5: Solve for x
    x = 622,667,674.68/28,550.87
  6. Step 6: Final answer
    x = 21,809.07

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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.