Home / 39,079.80-53,930.34-21,174.82

Finding the Fourth Proportional to 39,079.80, 53,930.34 and 21,174.82

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Solution

The fourth proportional to 39,079.80, 53,930.34 and 21,174.82 is: 29,221.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,079.80 : 53,930.34 = 21,174.82 : x
  2. Step 2: Convert to fraction form
    39,079.80/53,930.34 = 21,174.82/x
  3. Step 3: Cross multiply
    39,079.80x = 53,930.34 × 21,174.82
  4. Step 4: Simplify right side
    39,079.80x = 1,141,965,107.21
  5. Step 5: Solve for x
    x = 1,141,965,107.21/39,079.80
  6. Step 6: Final answer
    x = 29,221.37

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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.