Home / 20,570.82-30,858.03-5,779.86

Finding the Fourth Proportional to 20,570.82, 30,858.03 and 5,779.86

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Solution

The fourth proportional to 20,570.82, 30,858.03 and 5,779.86 is: 8,670.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.82 : 30,858.03 = 5,779.86 : x
  2. Step 2: Convert to fraction form
    20,570.82/30,858.03 = 5,779.86/x
  3. Step 3: Cross multiply
    20,570.82x = 30,858.03 × 5,779.86
  4. Step 4: Simplify right side
    20,570.82x = 178,355,093.28
  5. Step 5: Solve for x
    x = 178,355,093.28/20,570.82
  6. Step 6: Final answer
    x = 8,670.30

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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.