Home / 31,826.16-43,940.34-21,771.36

Finding the Fourth Proportional to 31,826.16, 43,940.34 and 21,771.36

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Solution

The fourth proportional to 31,826.16, 43,940.34 and 21,771.36 is: 30,058.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,826.16 : 43,940.34 = 21,771.36 : x
  2. Step 2: Convert to fraction form
    31,826.16/43,940.34 = 21,771.36/x
  3. Step 3: Cross multiply
    31,826.16x = 43,940.34 × 21,771.36
  4. Step 4: Simplify right side
    31,826.16x = 956,640,960.66
  5. Step 5: Solve for x
    x = 956,640,960.66/31,826.16
  6. Step 6: Final answer
    x = 30,058.32

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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.