Home / 28,382.27-42,579.59-8,660.30

Finding the Fourth Proportional to 28,382.27, 42,579.59 and 8,660.30

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Solution

The fourth proportional to 28,382.27, 42,579.59 and 8,660.30 is: 12,992.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.27 : 42,579.59 = 8,660.30 : x
  2. Step 2: Convert to fraction form
    28,382.27/42,579.59 = 8,660.30/x
  3. Step 3: Cross multiply
    28,382.27x = 42,579.59 × 8,660.30
  4. Step 4: Simplify right side
    28,382.27x = 368,751,767.08
  5. Step 5: Solve for x
    x = 368,751,767.08/28,382.27
  6. Step 6: Final answer
    x = 12,992.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.