Home / 11,215.12-16,820.34-3,819.52

Finding the Fourth Proportional to 11,215.12, 16,820.34 and 3,819.52

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Solution

The fourth proportional to 11,215.12, 16,820.34 and 3,819.52 is: 5,728.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.12 : 16,820.34 = 3,819.52 : x
  2. Step 2: Convert to fraction form
    11,215.12/16,820.34 = 3,819.52/x
  3. Step 3: Cross multiply
    11,215.12x = 16,820.34 × 3,819.52
  4. Step 4: Simplify right side
    11,215.12x = 64,245,625.04
  5. Step 5: Solve for x
    x = 64,245,625.04/11,215.12
  6. Step 6: Final answer
    x = 5,728.48

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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.