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Finding the Fourth Proportional to 28,869.65, 43,287.93 and 8,873.94

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Solution

The fourth proportional to 28,869.65, 43,287.93 and 8,873.94 is: 13,305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,869.65 : 43,287.93 = 8,873.94 : x
  2. Step 2: Convert to fraction form
    28,869.65/43,287.93 = 8,873.94/x
  3. Step 3: Cross multiply
    28,869.65x = 43,287.93 × 8,873.94
  4. Step 4: Simplify right side
    28,869.65x = 384,134,493.54
  5. Step 5: Solve for x
    x = 384,134,493.54/28,869.65
  6. Step 6: Final answer
    x = 13,305.83

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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.