Home / 39,379.92-54,343.80-21,474.51

Finding the Fourth Proportional to 39,379.92, 54,343.80 and 21,474.51

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Solution

The fourth proportional to 39,379.92, 54,343.80 and 21,474.51 is: 29,634.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,379.92 : 54,343.80 = 21,474.51 : x
  2. Step 2: Convert to fraction form
    39,379.92/54,343.80 = 21,474.51/x
  3. Step 3: Cross multiply
    39,379.92x = 54,343.80 × 21,474.51
  4. Step 4: Simplify right side
    39,379.92x = 1,167,006,476.54
  5. Step 5: Solve for x
    x = 1,167,006,476.54/39,379.92
  6. Step 6: Final answer
    x = 29,634.56

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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.