Home / 38,923.20-58,399.20-12,628.80

Finding the Fourth Proportional to 38,923.20, 58,399.20 and 12,628.80

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Solution

The fourth proportional to 38,923.20, 58,399.20 and 12,628.80 is: 18,947.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,923.20 : 58,399.20 = 12,628.80 : x
  2. Step 2: Convert to fraction form
    38,923.20/58,399.20 = 12,628.80/x
  3. Step 3: Cross multiply
    38,923.20x = 58,399.20 × 12,628.80
  4. Step 4: Simplify right side
    38,923.20x = 737,511,816.96
  5. Step 5: Solve for x
    x = 737,511,816.96/38,923.20
  6. Step 6: Final answer
    x = 18,947.87

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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.