Home / 11,529.88-15,905.21-7,279.41

Finding the Fourth Proportional to 11,529.88, 15,905.21 and 7,279.41

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Solution

The fourth proportional to 11,529.88, 15,905.21 and 7,279.41 is: 10,041.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,529.88 : 15,905.21 = 7,279.41 : x
  2. Step 2: Convert to fraction form
    11,529.88/15,905.21 = 7,279.41/x
  3. Step 3: Cross multiply
    11,529.88x = 15,905.21 × 7,279.41
  4. Step 4: Simplify right side
    11,529.88x = 115,780,504.96
  5. Step 5: Solve for x
    x = 115,780,504.96/11,529.88
  6. Step 6: Final answer
    x = 10,041.78

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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.