Home / 38,979.29-53,791.43-21,074.29

Finding the Fourth Proportional to 38,979.29, 53,791.43 and 21,074.29

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Solution

The fourth proportional to 38,979.29, 53,791.43 and 21,074.29 is: 29,082.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,979.29 : 53,791.43 = 21,074.29 : x
  2. Step 2: Convert to fraction form
    38,979.29/53,791.43 = 21,074.29/x
  3. Step 3: Cross multiply
    38,979.29x = 53,791.43 × 21,074.29
  4. Step 4: Simplify right side
    38,979.29x = 1,133,616,195.33
  5. Step 5: Solve for x
    x = 1,133,616,195.33/38,979.29
  6. Step 6: Final answer
    x = 29,082.53

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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.