Home / 31,390.22-43,321.55-17,963.39

Finding the Fourth Proportional to 31,390.22, 43,321.55 and 17,963.39

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Solution

The fourth proportional to 31,390.22, 43,321.55 and 17,963.39 is: 24,791.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.22 : 43,321.55 = 17,963.39 : x
  2. Step 2: Convert to fraction form
    31,390.22/43,321.55 = 17,963.39/x
  3. Step 3: Cross multiply
    31,390.22x = 43,321.55 × 17,963.39
  4. Step 4: Simplify right side
    31,390.22x = 778,201,591.63
  5. Step 5: Solve for x
    x = 778,201,591.63/31,390.22
  6. Step 6: Final answer
    x = 24,791.22

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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.