Home / 38,448.06-53,067.99-21,690.78

Finding the Fourth Proportional to 38,448.06, 53,067.99 and 21,690.78

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Solution

The fourth proportional to 38,448.06, 53,067.99 and 21,690.78 is: 29,938.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,448.06 : 53,067.99 = 21,690.78 : x
  2. Step 2: Convert to fraction form
    38,448.06/53,067.99 = 21,690.78/x
  3. Step 3: Cross multiply
    38,448.06x = 53,067.99 × 21,690.78
  4. Step 4: Simplify right side
    38,448.06x = 1,151,086,096.13
  5. Step 5: Solve for x
    x = 1,151,086,096.13/38,448.06
  6. Step 6: Final answer
    x = 29,938.73

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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.