Home / 12,179.96-18,313.40-11,217.68

Finding the Fourth Proportional to 12,179.96, 18,313.40 and 11,217.68

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Solution

The fourth proportional to 12,179.96, 18,313.40 and 11,217.68 is: 16,866.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.96 : 18,313.40 = 11,217.68 : x
  2. Step 2: Convert to fraction form
    12,179.96/18,313.40 = 11,217.68/x
  3. Step 3: Cross multiply
    12,179.96x = 18,313.40 × 11,217.68
  4. Step 4: Simplify right side
    12,179.96x = 205,433,860.91
  5. Step 5: Solve for x
    x = 205,433,860.91/12,179.96
  6. Step 6: Final answer
    x = 16,866.55

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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.