Home / 20,832.96-31,238.80-6,783.96

Finding the Fourth Proportional to 20,832.96, 31,238.80 and 6,783.96

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Solution

The fourth proportional to 20,832.96, 31,238.80 and 6,783.96 is: 10,172.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.96 : 31,238.80 = 6,783.96 : x
  2. Step 2: Convert to fraction form
    20,832.96/31,238.80 = 6,783.96/x
  3. Step 3: Cross multiply
    20,832.96x = 31,238.80 × 6,783.96
  4. Step 4: Simplify right side
    20,832.96x = 211,922,769.65
  5. Step 5: Solve for x
    x = 211,922,769.65/20,832.96
  6. Step 6: Final answer
    x = 10,172.48

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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.