Home / 20,692.68-28,555.70-11,261.24

Finding the Fourth Proportional to 20,692.68, 28,555.70 and 11,261.24

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Solution

The fourth proportional to 20,692.68, 28,555.70 and 11,261.24 is: 15,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.68 : 28,555.70 = 11,261.24 : x
  2. Step 2: Convert to fraction form
    20,692.68/28,555.70 = 11,261.24/x
  3. Step 3: Cross multiply
    20,692.68x = 28,555.70 × 11,261.24
  4. Step 4: Simplify right side
    20,692.68x = 321,572,591.07
  5. Step 5: Solve for x
    x = 321,572,591.07/20,692.68
  6. Step 6: Final answer
    x = 15,540.40

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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.