Home / 13,521.56-20,279.86-3,661.64

Finding the Fourth Proportional to 13,521.56, 20,279.86 and 3,661.64

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Solution

The fourth proportional to 13,521.56, 20,279.86 and 3,661.64 is: 5,491.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.56 : 20,279.86 = 3,661.64 : x
  2. Step 2: Convert to fraction form
    13,521.56/20,279.86 = 3,661.64/x
  3. Step 3: Cross multiply
    13,521.56x = 20,279.86 × 3,661.64
  4. Step 4: Simplify right side
    13,521.56x = 74,257,546.57
  5. Step 5: Solve for x
    x = 74,257,546.57/13,521.56
  6. Step 6: Final answer
    x = 5,491.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.