Home / 39,140.30-54,013.30-21,912.73

Finding the Fourth Proportional to 39,140.30, 54,013.30 and 21,912.73

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Solution

The fourth proportional to 39,140.30, 54,013.30 and 21,912.73 is: 30,239.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,140.30 : 54,013.30 = 21,912.73 : x
  2. Step 2: Convert to fraction form
    39,140.30/54,013.30 = 21,912.73/x
  3. Step 3: Cross multiply
    39,140.30x = 54,013.30 × 21,912.73
  4. Step 4: Simplify right side
    39,140.30x = 1,183,578,669.49
  5. Step 5: Solve for x
    x = 1,183,578,669.49/39,140.30
  6. Step 6: Final answer
    x = 30,239.38

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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.