Home / 31,619.75-43,642.53-18,198.76

Finding the Fourth Proportional to 31,619.75, 43,642.53 and 18,198.76

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Solution

The fourth proportional to 31,619.75, 43,642.53 and 18,198.76 is: 25,118.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,619.75 : 43,642.53 = 18,198.76 : x
  2. Step 2: Convert to fraction form
    31,619.75/43,642.53 = 18,198.76/x
  3. Step 3: Cross multiply
    31,619.75x = 43,642.53 × 18,198.76
  4. Step 4: Simplify right side
    31,619.75x = 794,239,711.05
  5. Step 5: Solve for x
    x = 794,239,711.05/31,619.75
  6. Step 6: Final answer
    x = 25,118.47

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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.