Home / 31,430.78-43,375.22-17,091.43

Finding the Fourth Proportional to 31,430.78, 43,375.22 and 17,091.43

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Solution

The fourth proportional to 31,430.78, 43,375.22 and 17,091.43 is: 23,586.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,430.78 : 43,375.22 = 17,091.43 : x
  2. Step 2: Convert to fraction form
    31,430.78/43,375.22 = 17,091.43/x
  3. Step 3: Cross multiply
    31,430.78x = 43,375.22 × 17,091.43
  4. Step 4: Simplify right side
    31,430.78x = 741,344,536.36
  5. Step 5: Solve for x
    x = 741,344,536.36/31,430.78
  6. Step 6: Final answer
    x = 23,586.58

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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.