Home / 39,696.06-54,782.52-21,790.92

Finding the Fourth Proportional to 39,696.06, 54,782.52 and 21,790.92

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Solution

The fourth proportional to 39,696.06, 54,782.52 and 21,790.92 is: 30,072.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,696.06 : 54,782.52 = 21,790.92 : x
  2. Step 2: Convert to fraction form
    39,696.06/54,782.52 = 21,790.92/x
  3. Step 3: Cross multiply
    39,696.06x = 54,782.52 × 21,790.92
  4. Step 4: Simplify right side
    39,696.06x = 1,193,761,510.72
  5. Step 5: Solve for x
    x = 1,193,761,510.72/39,696.06
  6. Step 6: Final answer
    x = 30,072.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.