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Finding the Fourth Proportional to 18,410.40, 27,615.60 and 8,042.40

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Solution

The fourth proportional to 18,410.40, 27,615.60 and 8,042.40 is: 12,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,410.40 : 27,615.60 = 8,042.40 : x
  2. Step 2: Convert to fraction form
    18,410.40/27,615.60 = 8,042.40/x
  3. Step 3: Cross multiply
    18,410.40x = 27,615.60 × 8,042.40
  4. Step 4: Simplify right side
    18,410.40x = 222,095,701.44
  5. Step 5: Solve for x
    x = 222,095,701.44/18,410.40
  6. Step 6: Final answer
    x = 12,063.60

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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.