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Finding the Fourth Proportional to 28,918.82, 43,377.78 and 9,197.09

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Solution

The fourth proportional to 28,918.82, 43,377.78 and 9,197.09 is: 13,795.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.82 : 43,377.78 = 9,197.09 : x
  2. Step 2: Convert to fraction form
    28,918.82/43,377.78 = 9,197.09/x
  3. Step 3: Cross multiply
    28,918.82x = 43,377.78 × 9,197.09
  4. Step 4: Simplify right side
    28,918.82x = 398,949,519.19
  5. Step 5: Solve for x
    x = 398,949,519.19/28,918.82
  6. Step 6: Final answer
    x = 13,795.50

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1.5x scale

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.