Home / 31,430.58-43,383.39-18,692.73

Finding the Fourth Proportional to 31,430.58, 43,383.39 and 18,692.73

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Solution

The fourth proportional to 31,430.58, 43,383.39 and 18,692.73 is: 25,801.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,430.58 : 43,383.39 = 18,692.73 : x
  2. Step 2: Convert to fraction form
    31,430.58/43,383.39 = 18,692.73/x
  3. Step 3: Cross multiply
    31,430.58x = 43,383.39 × 18,692.73
  4. Step 4: Simplify right side
    31,430.58x = 810,953,995.75
  5. Step 5: Solve for x
    x = 810,953,995.75/31,430.58
  6. Step 6: Final answer
    x = 25,801.43

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Half scale
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Double scale
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Similar ratio
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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.