Home / 21,187.06-31,768.23-6,391.54

Finding the Fourth Proportional to 21,187.06, 31,768.23 and 6,391.54

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Solution

The fourth proportional to 21,187.06, 31,768.23 and 6,391.54 is: 9,583.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.06 : 31,768.23 = 6,391.54 : x
  2. Step 2: Convert to fraction form
    21,187.06/31,768.23 = 6,391.54/x
  3. Step 3: Cross multiply
    21,187.06x = 31,768.23 × 6,391.54
  4. Step 4: Simplify right side
    21,187.06x = 203,047,912.77
  5. Step 5: Solve for x
    x = 203,047,912.77/21,187.06
  6. Step 6: Final answer
    x = 9,583.58

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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.