Home / 31,878.66-43,991.19-18,450.48

Finding the Fourth Proportional to 31,878.66, 43,991.19 and 18,450.48

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Solution

The fourth proportional to 31,878.66, 43,991.19 and 18,450.48 is: 25,460.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,878.66 : 43,991.19 = 18,450.48 : x
  2. Step 2: Convert to fraction form
    31,878.66/43,991.19 = 18,450.48/x
  3. Step 3: Cross multiply
    31,878.66x = 43,991.19 × 18,450.48
  4. Step 4: Simplify right side
    31,878.66x = 811,658,571.27
  5. Step 5: Solve for x
    x = 811,658,571.27/31,878.66
  6. Step 6: Final answer
    x = 25,460.87

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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.