Home / 21,202.38-29,259.78-11,771.56

Finding the Fourth Proportional to 21,202.38, 29,259.78 and 11,771.56

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Solution

The fourth proportional to 21,202.38, 29,259.78 and 11,771.56 is: 16,245.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202.38 : 29,259.78 = 11,771.56 : x
  2. Step 2: Convert to fraction form
    21,202.38/29,259.78 = 11,771.56/x
  3. Step 3: Cross multiply
    21,202.38x = 29,259.78 × 11,771.56
  4. Step 4: Simplify right side
    21,202.38x = 344,433,255.86
  5. Step 5: Solve for x
    x = 344,433,255.86/21,202.38
  6. Step 6: Final answer
    x = 16,245.03

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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.