Home / 20,851.03-31,285.24-8,379.93

Finding the Fourth Proportional to 20,851.03, 31,285.24 and 8,379.93

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Solution

The fourth proportional to 20,851.03, 31,285.24 and 8,379.93 is: 12,573.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.03 : 31,285.24 = 8,379.93 : x
  2. Step 2: Convert to fraction form
    20,851.03/31,285.24 = 8,379.93/x
  3. Step 3: Cross multiply
    20,851.03x = 31,285.24 × 8,379.93
  4. Step 4: Simplify right side
    20,851.03x = 262,168,217.60
  5. Step 5: Solve for x
    x = 262,168,217.60/20,851.03
  6. Step 6: Final answer
    x = 12,573.39

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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.