Home / 30,936.89-42,692.91-16,789.74

Finding the Fourth Proportional to 30,936.89, 42,692.91 and 16,789.74

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Solution

The fourth proportional to 30,936.89, 42,692.91 and 16,789.74 is: 23,169.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,936.89 : 42,692.91 = 16,789.74 : x
  2. Step 2: Convert to fraction form
    30,936.89/42,692.91 = 16,789.74/x
  3. Step 3: Cross multiply
    30,936.89x = 42,692.91 × 16,789.74
  4. Step 4: Simplify right side
    30,936.89x = 716,802,858.74
  5. Step 5: Solve for x
    x = 716,802,858.74/30,936.89
  6. Step 6: Final answer
    x = 23,169.84

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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.