Home / 20,692.15-28,553.19-11,615.43

Finding the Fourth Proportional to 20,692.15, 28,553.19 and 11,615.43

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Solution

The fourth proportional to 20,692.15, 28,553.19 and 11,615.43 is: 16,028.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.15 : 28,553.19 = 11,615.43 : x
  2. Step 2: Convert to fraction form
    20,692.15/28,553.19 = 11,615.43/x
  3. Step 3: Cross multiply
    20,692.15x = 28,553.19 × 11,615.43
  4. Step 4: Simplify right side
    20,692.15x = 331,657,536.16
  5. Step 5: Solve for x
    x = 331,657,536.16/20,692.15
  6. Step 6: Final answer
    x = 16,028.18

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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.