Home / 13,586.21-20,378.84-3,725.33

Finding the Fourth Proportional to 13,586.21, 20,378.84 and 3,725.33

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Solution

The fourth proportional to 13,586.21, 20,378.84 and 3,725.33 is: 5,587.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.21 : 20,378.84 = 3,725.33 : x
  2. Step 2: Convert to fraction form
    13,586.21/20,378.84 = 3,725.33/x
  3. Step 3: Cross multiply
    13,586.21x = 20,378.84 × 3,725.33
  4. Step 4: Simplify right side
    13,586.21x = 75,917,885.39
  5. Step 5: Solve for x
    x = 75,917,885.39/13,586.21
  6. Step 6: Final answer
    x = 5,587.86

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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.