Home / 20,672.82-28,528.20-11,241.18

Finding the Fourth Proportional to 20,672.82, 28,528.20 and 11,241.18

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Solution

The fourth proportional to 20,672.82, 28,528.20 and 11,241.18 is: 15,512.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.82 : 28,528.20 = 11,241.18 : x
  2. Step 2: Convert to fraction form
    20,672.82/28,528.20 = 11,241.18/x
  3. Step 3: Cross multiply
    20,672.82x = 28,528.20 × 11,241.18
  4. Step 4: Simplify right side
    20,672.82x = 320,690,631.28
  5. Step 5: Solve for x
    x = 320,690,631.28/20,672.82
  6. Step 6: Final answer
    x = 15,512.67

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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.