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Finding the Fourth Proportional to 12,042.48, 18,063.72 and 7,908.60

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Solution

The fourth proportional to 12,042.48, 18,063.72 and 7,908.60 is: 11,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,042.48 : 18,063.72 = 7,908.60 : x
  2. Step 2: Convert to fraction form
    12,042.48/18,063.72 = 7,908.60/x
  3. Step 3: Cross multiply
    12,042.48x = 18,063.72 × 7,908.60
  4. Step 4: Simplify right side
    12,042.48x = 142,858,735.99
  5. Step 5: Solve for x
    x = 142,858,735.99/12,042.48
  6. Step 6: Final answer
    x = 11,862.90

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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.