Home / 30,936.85-42,692.60-16,789.69

Finding the Fourth Proportional to 30,936.85, 42,692.60 and 16,789.69

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Solution

The fourth proportional to 30,936.85, 42,692.60 and 16,789.69 is: 23,169.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,936.85 : 42,692.60 = 16,789.69 : x
  2. Step 2: Convert to fraction form
    30,936.85/42,692.60 = 16,789.69/x
  3. Step 3: Cross multiply
    30,936.85x = 42,692.60 × 16,789.69
  4. Step 4: Simplify right side
    30,936.85x = 716,795,519.29
  5. Step 5: Solve for x
    x = 716,795,519.29/30,936.85
  6. Step 6: Final answer
    x = 23,169.63

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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.