Home / 31,530.43-43,512.33-17,383.78

Finding the Fourth Proportional to 31,530.43, 43,512.33 and 17,383.78

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Solution

The fourth proportional to 31,530.43, 43,512.33 and 17,383.78 is: 23,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,530.43 : 43,512.33 = 17,383.78 : x
  2. Step 2: Convert to fraction form
    31,530.43/43,512.33 = 17,383.78/x
  3. Step 3: Cross multiply
    31,530.43x = 43,512.33 × 17,383.78
  4. Step 4: Simplify right side
    31,530.43x = 756,408,772.01
  5. Step 5: Solve for x
    x = 756,408,772.01/31,530.43
  6. Step 6: Final answer
    x = 23,989.80

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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.