Home / 28,843.12-39,821.53-22,115.82

Finding the Fourth Proportional to 28,843.12, 39,821.53 and 22,115.82

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Solution

The fourth proportional to 28,843.12, 39,821.53 and 22,115.82 is: 30,533.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,843.12 : 39,821.53 = 22,115.82 : x
  2. Step 2: Convert to fraction form
    28,843.12/39,821.53 = 22,115.82/x
  3. Step 3: Cross multiply
    28,843.12x = 39,821.53 × 22,115.82
  4. Step 4: Simplify right side
    28,843.12x = 880,685,789.60
  5. Step 5: Solve for x
    x = 880,685,789.60/28,843.12
  6. Step 6: Final answer
    x = 30,533.65

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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.