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Finding the Fourth Proportional to 28,708.75, 43,063.93 and 7,932.25

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Solution

The fourth proportional to 28,708.75, 43,063.93 and 7,932.25 is: 11,898.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.75 : 43,063.93 = 7,932.25 : x
  2. Step 2: Convert to fraction form
    28,708.75/43,063.93 = 7,932.25/x
  3. Step 3: Cross multiply
    28,708.75x = 43,063.93 × 7,932.25
  4. Step 4: Simplify right side
    28,708.75x = 341,593,858.74
  5. Step 5: Solve for x
    x = 341,593,858.74/28,708.75
  6. Step 6: Final answer
    x = 11,898.60

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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.