Home / 13,416.69-20,125.03-5,518.88

Finding the Fourth Proportional to 13,416.69, 20,125.03 and 5,518.88

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Solution

The fourth proportional to 13,416.69, 20,125.03 and 5,518.88 is: 8,278.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.69 : 20,125.03 = 5,518.88 : x
  2. Step 2: Convert to fraction form
    13,416.69/20,125.03 = 5,518.88/x
  3. Step 3: Cross multiply
    13,416.69x = 20,125.03 × 5,518.88
  4. Step 4: Simplify right side
    13,416.69x = 111,067,725.69
  5. Step 5: Solve for x
    x = 111,067,725.69/13,416.69
  6. Step 6: Final answer
    x = 8,278.33

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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.