Home / 30,936.82-42,692.91-16,789.66

Finding the Fourth Proportional to 30,936.82, 42,692.91 and 16,789.66

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Solution

The fourth proportional to 30,936.82, 42,692.91 and 16,789.66 is: 23,169.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,936.82 : 42,692.91 = 16,789.66 : x
  2. Step 2: Convert to fraction form
    30,936.82/42,692.91 = 16,789.66/x
  3. Step 3: Cross multiply
    30,936.82x = 42,692.91 × 16,789.66
  4. Step 4: Simplify right side
    30,936.82x = 716,799,443.31
  5. Step 5: Solve for x
    x = 716,799,443.31/30,936.82
  6. Step 6: Final answer
    x = 23,169.78

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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.