Home / 39,179.50-54,067.74-21,274.51

Finding the Fourth Proportional to 39,179.50, 54,067.74 and 21,274.51

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Solution

The fourth proportional to 39,179.50, 54,067.74 and 21,274.51 is: 29,358.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,179.50 : 54,067.74 = 21,274.51 : x
  2. Step 2: Convert to fraction form
    39,179.50/54,067.74 = 21,274.51/x
  3. Step 3: Cross multiply
    39,179.50x = 54,067.74 × 21,274.51
  4. Step 4: Simplify right side
    39,179.50x = 1,150,264,675.31
  5. Step 5: Solve for x
    x = 1,150,264,675.31/39,179.50
  6. Step 6: Final answer
    x = 29,358.84

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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.