Home / 28,590.80-39,454.23-15,843.65

Finding the Fourth Proportional to 28,590.80, 39,454.23 and 15,843.65

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Solution

The fourth proportional to 28,590.80, 39,454.23 and 15,843.65 is: 21,863.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,590.80 : 39,454.23 = 15,843.65 : x
  2. Step 2: Convert to fraction form
    28,590.80/39,454.23 = 15,843.65/x
  3. Step 3: Cross multiply
    28,590.80x = 39,454.23 × 15,843.65
  4. Step 4: Simplify right side
    28,590.80x = 625,099,161.62
  5. Step 5: Solve for x
    x = 625,099,161.62/28,590.80
  6. Step 6: Final answer
    x = 21,863.65

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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.