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Finding the Fourth Proportional to 12,293.88, 18,431.88 and 4,896.12

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Solution

The fourth proportional to 12,293.88, 18,431.88 and 4,896.12 is: 7,340.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,293.88 : 18,431.88 = 4,896.12 : x
  2. Step 2: Convert to fraction form
    12,293.88/18,431.88 = 4,896.12/x
  3. Step 3: Cross multiply
    12,293.88x = 18,431.88 × 4,896.12
  4. Step 4: Simplify right side
    12,293.88x = 90,244,696.31
  5. Step 5: Solve for x
    x = 90,244,696.31/12,293.88
  6. Step 6: Final answer
    x = 7,340.62

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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.