Home / 20,945.94-31,409.03-7,609.53

Finding the Fourth Proportional to 20,945.94, 31,409.03 and 7,609.53

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Solution

The fourth proportional to 20,945.94, 31,409.03 and 7,609.53 is: 11,410.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.94 : 31,409.03 = 7,609.53 : x
  2. Step 2: Convert to fraction form
    20,945.94/31,409.03 = 7,609.53/x
  3. Step 3: Cross multiply
    20,945.94x = 31,409.03 × 7,609.53
  4. Step 4: Simplify right side
    20,945.94x = 239,008,092.86
  5. Step 5: Solve for x
    x = 239,008,092.86/20,945.94
  6. Step 6: Final answer
    x = 11,410.71

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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.