Home / 13,608.30-20,401.11-5,286.36

Finding the Fourth Proportional to 13,608.30, 20,401.11 and 5,286.36

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Solution

The fourth proportional to 13,608.30, 20,401.11 and 5,286.36 is: 7,925.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.30 : 20,401.11 = 5,286.36 : x
  2. Step 2: Convert to fraction form
    13,608.30/20,401.11 = 5,286.36/x
  3. Step 3: Cross multiply
    13,608.30x = 20,401.11 × 5,286.36
  4. Step 4: Simplify right side
    13,608.30x = 107,847,611.86
  5. Step 5: Solve for x
    x = 107,847,611.86/13,608.30
  6. Step 6: Final answer
    x = 7,925.13

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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.