Home / 20,692.12-28,554.06-11,260.48

Finding the Fourth Proportional to 20,692.12, 28,554.06 and 11,260.48

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Solution

The fourth proportional to 20,692.12, 28,554.06 and 11,260.48 is: 15,538.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.12 : 28,554.06 = 11,260.48 : x
  2. Step 2: Convert to fraction form
    20,692.12/28,554.06 = 11,260.48/x
  3. Step 3: Cross multiply
    20,692.12x = 28,554.06 × 11,260.48
  4. Step 4: Simplify right side
    20,692.12x = 321,532,421.55
  5. Step 5: Solve for x
    x = 321,532,421.55/20,692.12
  6. Step 6: Final answer
    x = 15,538.88

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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.