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Finding the Fourth Proportional to 28,940, 43,409.96 and 19,007.44

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Solution

The fourth proportional to 28,940, 43,409.96 and 19,007.44 is: 28,511.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,940 : 43,409.96 = 19,007.44 : x
  2. Step 2: Convert to fraction form
    28,940/43,409.96 = 19,007.44/x
  3. Step 3: Cross multiply
    28,940x = 43,409.96 × 19,007.44
  4. Step 4: Simplify right side
    28,940x = 825,112,210.10
  5. Step 5: Solve for x
    x = 825,112,210.10/28,940
  6. Step 6: Final answer
    x = 28,511.13

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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.