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Finding the Fourth Proportional to 36,982.80, 55,474.20 and 12,358.80

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Solution

The fourth proportional to 36,982.80, 55,474.20 and 12,358.80 is: 18,538.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,982.80 : 55,474.20 = 12,358.80 : x
  2. Step 2: Convert to fraction form
    36,982.80/55,474.20 = 12,358.80/x
  3. Step 3: Cross multiply
    36,982.80x = 55,474.20 × 12,358.80
  4. Step 4: Simplify right side
    36,982.80x = 685,594,542.96
  5. Step 5: Solve for x
    x = 685,594,542.96/36,982.80
  6. Step 6: Final answer
    x = 18,538.20

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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.