Home / 31,879.41-43,995.20-18,451.23

Finding the Fourth Proportional to 31,879.41, 43,995.20 and 18,451.23

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Solution

The fourth proportional to 31,879.41, 43,995.20 and 18,451.23 is: 25,463.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,879.41 : 43,995.20 = 18,451.23 : x
  2. Step 2: Convert to fraction form
    31,879.41/43,995.20 = 18,451.23/x
  3. Step 3: Cross multiply
    31,879.41x = 43,995.20 × 18,451.23
  4. Step 4: Simplify right side
    31,879.41x = 811,765,554.10
  5. Step 5: Solve for x
    x = 811,765,554.10/31,879.41
  6. Step 6: Final answer
    x = 25,463.63

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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.