Home / 31,286.22-43,175.43-18,708.54

Finding the Fourth Proportional to 31,286.22, 43,175.43 and 18,708.54

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Solution

The fourth proportional to 31,286.22, 43,175.43 and 18,708.54 is: 25,818.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,286.22 : 43,175.43 = 18,708.54 : x
  2. Step 2: Convert to fraction form
    31,286.22/43,175.43 = 18,708.54/x
  3. Step 3: Cross multiply
    31,286.22x = 43,175.43 × 18,708.54
  4. Step 4: Simplify right side
    31,286.22x = 807,749,259.17
  5. Step 5: Solve for x
    x = 807,749,259.17/31,286.22
  6. Step 6: Final answer
    x = 25,818.05

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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.