Home / 18,713.37-28,067.81-8,190.75

Finding the Fourth Proportional to 18,713.37, 28,067.81 and 8,190.75

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Solution

The fourth proportional to 18,713.37, 28,067.81 and 8,190.75 is: 12,285.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,713.37 : 28,067.81 = 8,190.75 : x
  2. Step 2: Convert to fraction form
    18,713.37/28,067.81 = 8,190.75/x
  3. Step 3: Cross multiply
    18,713.37x = 28,067.81 × 8,190.75
  4. Step 4: Simplify right side
    18,713.37x = 229,896,373.80
  5. Step 5: Solve for x
    x = 229,896,373.80/18,713.37
  6. Step 6: Final answer
    x = 12,285.14

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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.