Home / 31,067.20-42,878.64-18,498.88

Finding the Fourth Proportional to 31,067.20, 42,878.64 and 18,498.88

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Solution

The fourth proportional to 31,067.20, 42,878.64 and 18,498.88 is: 25,531.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,067.20 : 42,878.64 = 18,498.88 : x
  2. Step 2: Convert to fraction form
    31,067.20/42,878.64 = 18,498.88/x
  3. Step 3: Cross multiply
    31,067.20x = 42,878.64 × 18,498.88
  4. Step 4: Simplify right side
    31,067.20x = 793,206,815.92
  5. Step 5: Solve for x
    x = 793,206,815.92/31,067.20
  6. Step 6: Final answer
    x = 25,531.97

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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.