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Finding the Fourth Proportional to 12,751.60, 19,105.80 and 8,366.80

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Solution

The fourth proportional to 12,751.60, 19,105.80 and 8,366.80 is: 12,536.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,751.60 : 19,105.80 = 8,366.80 : x
  2. Step 2: Convert to fraction form
    12,751.60/19,105.80 = 8,366.80/x
  3. Step 3: Cross multiply
    12,751.60x = 19,105.80 × 8,366.80
  4. Step 4: Simplify right side
    12,751.60x = 159,854,407.44
  5. Step 5: Solve for x
    x = 159,854,407.44/12,751.60
  6. Step 6: Final answer
    x = 12,536.03

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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.