Home / 12,218.73-16,861.82-6,629.73

Finding the Fourth Proportional to 12,218.73, 16,861.82 and 6,629.73

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Solution

The fourth proportional to 12,218.73, 16,861.82 and 6,629.73 is: 9,149.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.73 : 16,861.82 = 6,629.73 : x
  2. Step 2: Convert to fraction form
    12,218.73/16,861.82 = 6,629.73/x
  3. Step 3: Cross multiply
    12,218.73x = 16,861.82 × 6,629.73
  4. Step 4: Simplify right side
    12,218.73x = 111,789,280.76
  5. Step 5: Solve for x
    x = 111,789,280.76/12,218.73
  6. Step 6: Final answer
    x = 9,149.01

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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.