Home / 39,067.77-53,913.79-21,162.78

Finding the Fourth Proportional to 39,067.77, 53,913.79 and 21,162.78

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Solution

The fourth proportional to 39,067.77, 53,913.79 and 21,162.78 is: 29,204.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,067.77 : 53,913.79 = 21,162.78 : x
  2. Step 2: Convert to fraction form
    39,067.77/53,913.79 = 21,162.78/x
  3. Step 3: Cross multiply
    39,067.77x = 53,913.79 × 21,162.78
  4. Step 4: Simplify right side
    39,067.77x = 1,140,965,623.83
  5. Step 5: Solve for x
    x = 1,140,965,623.83/39,067.77
  6. Step 6: Final answer
    x = 29,204.78

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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.