Home / 39,067.18-53,912.36-21,161.12

Finding the Fourth Proportional to 39,067.18, 53,912.36 and 21,161.12

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Solution

The fourth proportional to 39,067.18, 53,912.36 and 21,161.12 is: 29,202.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,067.18 : 53,912.36 = 21,161.12 : x
  2. Step 2: Convert to fraction form
    39,067.18/53,912.36 = 21,161.12/x
  3. Step 3: Cross multiply
    39,067.18x = 53,912.36 × 21,161.12
  4. Step 4: Simplify right side
    39,067.18x = 1,140,845,919.44
  5. Step 5: Solve for x
    x = 1,140,845,919.44/39,067.18
  6. Step 6: Final answer
    x = 29,202.16

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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.