Home / 20,692.38-28,553.51-11,615.66

Finding the Fourth Proportional to 20,692.38, 28,553.51 and 11,615.66

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Solution

The fourth proportional to 20,692.38, 28,553.51 and 11,615.66 is: 16,028.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.38 : 28,553.51 = 11,615.66 : x
  2. Step 2: Convert to fraction form
    20,692.38/28,553.51 = 11,615.66/x
  3. Step 3: Cross multiply
    20,692.38x = 28,553.51 × 11,615.66
  4. Step 4: Simplify right side
    20,692.38x = 331,667,904.95
  5. Step 5: Solve for x
    x = 331,667,904.95/20,692.38
  6. Step 6: Final answer
    x = 16,028.50

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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.