Home / 20,692.38-28,556.08-11,261.54

Finding the Fourth Proportional to 20,692.38, 28,556.08 and 11,261.54

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Solution

The fourth proportional to 20,692.38, 28,556.08 and 11,261.54 is: 15,541.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.38 : 28,556.08 = 11,261.54 : x
  2. Step 2: Convert to fraction form
    20,692.38/28,556.08 = 11,261.54/x
  3. Step 3: Cross multiply
    20,692.38x = 28,556.08 × 11,261.54
  4. Step 4: Simplify right side
    20,692.38x = 321,585,437.16
  5. Step 5: Solve for x
    x = 321,585,437.16/20,692.38
  6. Step 6: Final answer
    x = 15,541.25

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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.