Home / 38,979.48-53,791.68-21,074.48

Finding the Fourth Proportional to 38,979.48, 53,791.68 and 21,074.48

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Solution

The fourth proportional to 38,979.48, 53,791.68 and 21,074.48 is: 29,082.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,979.48 : 53,791.68 = 21,074.48 : x
  2. Step 2: Convert to fraction form
    38,979.48/53,791.68 = 21,074.48/x
  3. Step 3: Cross multiply
    38,979.48x = 53,791.68 × 21,074.48
  4. Step 4: Simplify right side
    38,979.48x = 1,133,631,577.57
  5. Step 5: Solve for x
    x = 1,133,631,577.57/38,979.48
  6. Step 6: Final answer
    x = 29,082.78

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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.