Home / 31,257.56-43,128.77-18,514.77

Finding the Fourth Proportional to 31,257.56, 43,128.77 and 18,514.77

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Solution

The fourth proportional to 31,257.56, 43,128.77 and 18,514.77 is: 25,546.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,257.56 : 43,128.77 = 18,514.77 : x
  2. Step 2: Convert to fraction form
    31,257.56/43,128.77 = 18,514.77/x
  3. Step 3: Cross multiply
    31,257.56x = 43,128.77 × 18,514.77
  4. Step 4: Simplify right side
    31,257.56x = 798,519,164.36
  5. Step 5: Solve for x
    x = 798,519,164.36/31,257.56
  6. Step 6: Final answer
    x = 25,546.44

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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.