Home / 31,270.09-43,159.43-19,936.98

Finding the Fourth Proportional to 31,270.09, 43,159.43 and 19,936.98

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Solution

The fourth proportional to 31,270.09, 43,159.43 and 19,936.98 is: 27,517.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,270.09 : 43,159.43 = 19,936.98 : x
  2. Step 2: Convert to fraction form
    31,270.09/43,159.43 = 19,936.98/x
  3. Step 3: Cross multiply
    31,270.09x = 43,159.43 × 19,936.98
  4. Step 4: Simplify right side
    31,270.09x = 860,468,692.72
  5. Step 5: Solve for x
    x = 860,468,692.72/31,270.09
  6. Step 6: Final answer
    x = 27,517.31

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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.