Home / 20,692.50-28,555.79-11,261.13

Finding the Fourth Proportional to 20,692.50, 28,555.79 and 11,261.13

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Solution

The fourth proportional to 20,692.50, 28,555.79 and 11,261.13 is: 15,540.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.50 : 28,555.79 = 11,261.13 : x
  2. Step 2: Convert to fraction form
    20,692.50/28,555.79 = 11,261.13/x
  3. Step 3: Cross multiply
    20,692.50x = 28,555.79 × 11,261.13
  4. Step 4: Simplify right side
    20,692.50x = 321,570,407.14
  5. Step 5: Solve for x
    x = 321,570,407.14/20,692.50
  6. Step 6: Final answer
    x = 15,540.43

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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.