Home / 20,971.14-31,450.53-6,179.73

Finding the Fourth Proportional to 20,971.14, 31,450.53 and 6,179.73

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Solution

The fourth proportional to 20,971.14, 31,450.53 and 6,179.73 is: 9,267.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.14 : 31,450.53 = 6,179.73 : x
  2. Step 2: Convert to fraction form
    20,971.14/31,450.53 = 6,179.73/x
  3. Step 3: Cross multiply
    20,971.14x = 31,450.53 × 6,179.73
  4. Step 4: Simplify right side
    20,971.14x = 194,355,783.76
  5. Step 5: Solve for x
    x = 194,355,783.76/20,971.14
  6. Step 6: Final answer
    x = 9,267.77

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1.5x scale

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.