Home / 20,837.58-31,245.74-6,788.58

Finding the Fourth Proportional to 20,837.58, 31,245.74 and 6,788.58

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Solution

The fourth proportional to 20,837.58, 31,245.74 and 6,788.58 is: 10,179.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.58 : 31,245.74 = 6,788.58 : x
  2. Step 2: Convert to fraction form
    20,837.58/31,245.74 = 6,788.58/x
  3. Step 3: Cross multiply
    20,837.58x = 31,245.74 × 6,788.58
  4. Step 4: Simplify right side
    20,837.58x = 212,114,205.65
  5. Step 5: Solve for x
    x = 212,114,205.65/20,837.58
  6. Step 6: Final answer
    x = 10,179.41

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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.