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Finding the Fourth Proportional to 28,815.14, 43,222.71 and 9,107.54

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Solution

The fourth proportional to 28,815.14, 43,222.71 and 9,107.54 is: 13,661.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.14 : 43,222.71 = 9,107.54 : x
  2. Step 2: Convert to fraction form
    28,815.14/43,222.71 = 9,107.54/x
  3. Step 3: Cross multiply
    28,815.14x = 43,222.71 × 9,107.54
  4. Step 4: Simplify right side
    28,815.14x = 393,652,540.36
  5. Step 5: Solve for x
    x = 393,652,540.36/28,815.14
  6. Step 6: Final answer
    x = 13,661.31

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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.