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Finding the Fourth Proportional to 28,983.55, 43,481.57 and 8,992.65

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Solution

The fourth proportional to 28,983.55, 43,481.57 and 8,992.65 is: 13,490.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,983.55 : 43,481.57 = 8,992.65 : x
  2. Step 2: Convert to fraction form
    28,983.55/43,481.57 = 8,992.65/x
  3. Step 3: Cross multiply
    28,983.55x = 43,481.57 × 8,992.65
  4. Step 4: Simplify right side
    28,983.55x = 391,014,540.46
  5. Step 5: Solve for x
    x = 391,014,540.46/28,983.55
  6. Step 6: Final answer
    x = 13,490.91

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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.