Home / 13,525.82-20,290.12-5,212.80

Finding the Fourth Proportional to 13,525.82, 20,290.12 and 5,212.80

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Solution

The fourth proportional to 13,525.82, 20,290.12 and 5,212.80 is: 7,819.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,525.82 : 20,290.12 = 5,212.80 : x
  2. Step 2: Convert to fraction form
    13,525.82/20,290.12 = 5,212.80/x
  3. Step 3: Cross multiply
    13,525.82x = 20,290.12 × 5,212.80
  4. Step 4: Simplify right side
    13,525.82x = 105,768,337.54
  5. Step 5: Solve for x
    x = 105,768,337.54/13,525.82
  6. Step 6: Final answer
    x = 7,819.74

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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.