Home / 20,190.20-27,862.26-11,237.56

Finding the Fourth Proportional to 20,190.20, 27,862.26 and 11,237.56

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Solution

The fourth proportional to 20,190.20, 27,862.26 and 11,237.56 is: 15,507.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.20 : 27,862.26 = 11,237.56 : x
  2. Step 2: Convert to fraction form
    20,190.20/27,862.26 = 11,237.56/x
  3. Step 3: Cross multiply
    20,190.20x = 27,862.26 × 11,237.56
  4. Step 4: Simplify right side
    20,190.20x = 313,103,818.49
  5. Step 5: Solve for x
    x = 313,103,818.49/20,190.20
  6. Step 6: Final answer
    x = 15,507.71

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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.