Home / 31,259.09-43,137.60-17,112.80

Finding the Fourth Proportional to 31,259.09, 43,137.60 and 17,112.80

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Solution

The fourth proportional to 31,259.09, 43,137.60 and 17,112.80 is: 23,615.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,259.09 : 43,137.60 = 17,112.80 : x
  2. Step 2: Convert to fraction form
    31,259.09/43,137.60 = 17,112.80/x
  3. Step 3: Cross multiply
    31,259.09x = 43,137.60 × 17,112.80
  4. Step 4: Simplify right side
    31,259.09x = 738,205,121.28
  5. Step 5: Solve for x
    x = 738,205,121.28/31,259.09
  6. Step 6: Final answer
    x = 23,615.69

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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.