Home / 21,201.38-29,256.42-11,769.20

Finding the Fourth Proportional to 21,201.38, 29,256.42 and 11,769.20

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Solution

The fourth proportional to 21,201.38, 29,256.42 and 11,769.20 is: 16,240.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.38 : 29,256.42 = 11,769.20 : x
  2. Step 2: Convert to fraction form
    21,201.38/29,256.42 = 11,769.20/x
  3. Step 3: Cross multiply
    21,201.38x = 29,256.42 × 11,769.20
  4. Step 4: Simplify right side
    21,201.38x = 344,324,511.98
  5. Step 5: Solve for x
    x = 344,324,511.98/21,201.38
  6. Step 6: Final answer
    x = 16,240.67

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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.