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Finding the Fourth Proportional to 28,903.42, 43,358.01 and 7,843.79

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Solution

The fourth proportional to 28,903.42, 43,358.01 and 7,843.79 is: 11,766.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903.42 : 43,358.01 = 7,843.79 : x
  2. Step 2: Convert to fraction form
    28,903.42/43,358.01 = 7,843.79/x
  3. Step 3: Cross multiply
    28,903.42x = 43,358.01 × 7,843.79
  4. Step 4: Simplify right side
    28,903.42x = 340,091,233.65
  5. Step 5: Solve for x
    x = 340,091,233.65/28,903.42
  6. Step 6: Final answer
    x = 11,766.47

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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.