Home / 30,936.54-42,692.41-16,789.40

Finding the Fourth Proportional to 30,936.54, 42,692.41 and 16,789.40

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Solution

The fourth proportional to 30,936.54, 42,692.41 and 16,789.40 is: 23,169.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,936.54 : 42,692.41 = 16,789.40 : x
  2. Step 2: Convert to fraction form
    30,936.54/42,692.41 = 16,789.40/x
  3. Step 3: Cross multiply
    30,936.54x = 42,692.41 × 16,789.40
  4. Step 4: Simplify right side
    30,936.54x = 716,779,948.45
  5. Step 5: Solve for x
    x = 716,779,948.45/30,936.54
  6. Step 6: Final answer
    x = 23,169.36

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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.