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Finding the Fourth Proportional to 11,212.99, 16,820.95 and 3,815.46

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Solution

The fourth proportional to 11,212.99, 16,820.95 and 3,815.46 is: 5,723.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.99 : 16,820.95 = 3,815.46 : x
  2. Step 2: Convert to fraction form
    11,212.99/16,820.95 = 3,815.46/x
  3. Step 3: Cross multiply
    11,212.99x = 16,820.95 × 3,815.46
  4. Step 4: Simplify right side
    11,212.99x = 64,179,652.35
  5. Step 5: Solve for x
    x = 64,179,652.35/11,212.99
  6. Step 6: Final answer
    x = 5,723.69

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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.