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Finding the Fourth Proportional to 28,843.91, 43,281.25 and 11,313.89

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Solution

The fourth proportional to 28,843.91, 43,281.25 and 11,313.89 is: 16,976.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,843.91 : 43,281.25 = 11,313.89 : x
  2. Step 2: Convert to fraction form
    28,843.91/43,281.25 = 11,313.89/x
  3. Step 3: Cross multiply
    28,843.91x = 43,281.25 × 11,313.89
  4. Step 4: Simplify right side
    28,843.91x = 489,679,301.56
  5. Step 5: Solve for x
    x = 489,679,301.56/28,843.91
  6. Step 6: Final answer
    x = 16,976.87

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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.