Home / 28,690.30-43,033.78-12,891.25

Finding the Fourth Proportional to 28,690.30, 43,033.78 and 12,891.25

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Solution

The fourth proportional to 28,690.30, 43,033.78 and 12,891.25 is: 19,336.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,690.30 : 43,033.78 = 12,891.25 : x
  2. Step 2: Convert to fraction form
    28,690.30/43,033.78 = 12,891.25/x
  3. Step 3: Cross multiply
    28,690.30x = 43,033.78 × 12,891.25
  4. Step 4: Simplify right side
    28,690.30x = 554,759,286.33
  5. Step 5: Solve for x
    x = 554,759,286.33/28,690.30
  6. Step 6: Final answer
    x = 19,336.13

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1.5x scale

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.