Home / 30,936.72-42,692.40-16,789.44

Finding the Fourth Proportional to 30,936.72, 42,692.40 and 16,789.44

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Solution

The fourth proportional to 30,936.72, 42,692.40 and 16,789.44 is: 23,169.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,936.72 : 42,692.40 = 16,789.44 : x
  2. Step 2: Convert to fraction form
    30,936.72/42,692.40 = 16,789.44/x
  3. Step 3: Cross multiply
    30,936.72x = 42,692.40 × 16,789.44
  4. Step 4: Simplify right side
    30,936.72x = 716,781,488.26
  5. Step 5: Solve for x
    x = 716,781,488.26/30,936.72
  6. Step 6: Final answer
    x = 23,169.28

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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.