Home / 31,619.36-43,635.64-18,880

Finding the Fourth Proportional to 31,619.36, 43,635.64 and 18,880

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Solution

The fourth proportional to 31,619.36, 43,635.64 and 18,880 is: 26,054.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,619.36 : 43,635.64 = 18,880 : x
  2. Step 2: Convert to fraction form
    31,619.36/43,635.64 = 18,880/x
  3. Step 3: Cross multiply
    31,619.36x = 43,635.64 × 18,880
  4. Step 4: Simplify right side
    31,619.36x = 823,840,883.20
  5. Step 5: Solve for x
    x = 823,840,883.20/31,619.36
  6. Step 6: Final answer
    x = 26,054.95

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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.