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Finding the Fourth Proportional to 28,806.25, 43,209.38 and 6,918.25

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Solution

The fourth proportional to 28,806.25, 43,209.38 and 6,918.25 is: 10,377.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,806.25 : 43,209.38 = 6,918.25 : x
  2. Step 2: Convert to fraction form
    28,806.25/43,209.38 = 6,918.25/x
  3. Step 3: Cross multiply
    28,806.25x = 43,209.38 × 6,918.25
  4. Step 4: Simplify right side
    28,806.25x = 298,933,293.19
  5. Step 5: Solve for x
    x = 298,933,293.19/28,806.25
  6. Step 6: Final answer
    x = 10,377.38

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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.