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Finding the Fourth Proportional to 28,901.73, 43,355.48 and 7,842.11

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Solution

The fourth proportional to 28,901.73, 43,355.48 and 7,842.11 is: 11,763.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,901.73 : 43,355.48 = 7,842.11 : x
  2. Step 2: Convert to fraction form
    28,901.73/43,355.48 = 7,842.11/x
  3. Step 3: Cross multiply
    28,901.73x = 43,355.48 × 7,842.11
  4. Step 4: Simplify right side
    28,901.73x = 339,998,187.27
  5. Step 5: Solve for x
    x = 339,998,187.27/28,901.73
  6. Step 6: Final answer
    x = 11,763.94

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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.