Home / 28,183.43-38,891.79-15,435.65

Finding the Fourth Proportional to 28,183.43, 38,891.79 and 15,435.65

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Solution

The fourth proportional to 28,183.43, 38,891.79 and 15,435.65 is: 21,300.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,183.43 : 38,891.79 = 15,435.65 : x
  2. Step 2: Convert to fraction form
    28,183.43/38,891.79 = 15,435.65/x
  3. Step 3: Cross multiply
    28,183.43x = 38,891.79 × 15,435.65
  4. Step 4: Simplify right side
    28,183.43x = 600,319,863.85
  5. Step 5: Solve for x
    x = 600,319,863.85/28,183.43
  6. Step 6: Final answer
    x = 21,300.46

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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.