Home / 28,550.50-39,399.07-15,629.75

Finding the Fourth Proportional to 28,550.50, 39,399.07 and 15,629.75

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Solution

The fourth proportional to 28,550.50, 39,399.07 and 15,629.75 is: 21,568.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,550.50 : 39,399.07 = 15,629.75 : x
  2. Step 2: Convert to fraction form
    28,550.50/39,399.07 = 15,629.75/x
  3. Step 3: Cross multiply
    28,550.50x = 39,399.07 × 15,629.75
  4. Step 4: Simplify right side
    28,550.50x = 615,797,521.89
  5. Step 5: Solve for x
    x = 615,797,521.89/28,550.50
  6. Step 6: Final answer
    x = 21,568.71

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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.