Home / 20,893.70-31,318.54-6,850.07

Finding the Fourth Proportional to 20,893.70, 31,318.54 and 6,850.07

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Solution

The fourth proportional to 20,893.70, 31,318.54 and 6,850.07 is: 10,267.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.70 : 31,318.54 = 6,850.07 : x
  2. Step 2: Convert to fraction form
    20,893.70/31,318.54 = 6,850.07/x
  3. Step 3: Cross multiply
    20,893.70x = 31,318.54 × 6,850.07
  4. Step 4: Simplify right side
    20,893.70x = 214,534,191.30
  5. Step 5: Solve for x
    x = 214,534,191.30/20,893.70
  6. Step 6: Final answer
    x = 10,267.89

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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.