Home / 12,212.72-16,861.11-9,374.66

Finding the Fourth Proportional to 12,212.72, 16,861.11 and 9,374.66

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Solution

The fourth proportional to 12,212.72, 16,861.11 and 9,374.66 is: 12,942.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.72 : 16,861.11 = 9,374.66 : x
  2. Step 2: Convert to fraction form
    12,212.72/16,861.11 = 9,374.66/x
  3. Step 3: Cross multiply
    12,212.72x = 16,861.11 × 9,374.66
  4. Step 4: Simplify right side
    12,212.72x = 158,067,089.17
  5. Step 5: Solve for x
    x = 158,067,089.17/12,212.72
  6. Step 6: Final answer
    x = 12,942.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.