Home / 20,839.08-31,247.99-6,790.08

Finding the Fourth Proportional to 20,839.08, 31,247.99 and 6,790.08

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Solution

The fourth proportional to 20,839.08, 31,247.99 and 6,790.08 is: 10,181.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.08 : 31,247.99 = 6,790.08 : x
  2. Step 2: Convert to fraction form
    20,839.08/31,247.99 = 6,790.08/x
  3. Step 3: Cross multiply
    20,839.08x = 31,247.99 × 6,790.08
  4. Step 4: Simplify right side
    20,839.08x = 212,176,351.94
  5. Step 5: Solve for x
    x = 212,176,351.94/20,839.08
  6. Step 6: Final answer
    x = 10,181.66

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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.