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Finding the Fourth Proportional to 37,245.70, 55,853.70 and 12,278.80

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Solution

The fourth proportional to 37,245.70, 55,853.70 and 12,278.80 is: 18,413.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,245.70 : 55,853.70 = 12,278.80 : x
  2. Step 2: Convert to fraction form
    37,245.70/55,853.70 = 12,278.80/x
  3. Step 3: Cross multiply
    37,245.70x = 55,853.70 × 12,278.80
  4. Step 4: Simplify right side
    37,245.70x = 685,816,411.56
  5. Step 5: Solve for x
    x = 685,816,411.56/37,245.70
  6. Step 6: Final answer
    x = 18,413.30

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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.