Home / 31,617.36-43,632.88-18,878

Finding the Fourth Proportional to 31,617.36, 43,632.88 and 18,878

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Solution

The fourth proportional to 31,617.36, 43,632.88 and 18,878 is: 26,052.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,617.36 : 43,632.88 = 18,878 : x
  2. Step 2: Convert to fraction form
    31,617.36/43,632.88 = 18,878/x
  3. Step 3: Cross multiply
    31,617.36x = 43,632.88 × 18,878
  4. Step 4: Simplify right side
    31,617.36x = 823,701,508.64
  5. Step 5: Solve for x
    x = 823,701,508.64/31,617.36
  6. Step 6: Final answer
    x = 26,052.19

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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.