Home / 12,198.56-16,818.70-9,958.16

Finding the Fourth Proportional to 12,198.56, 16,818.70 and 9,958.16

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Solution

The fourth proportional to 12,198.56, 16,818.70 and 9,958.16 is: 13,729.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,198.56 : 16,818.70 = 9,958.16 : x
  2. Step 2: Convert to fraction form
    12,198.56/16,818.70 = 9,958.16/x
  3. Step 3: Cross multiply
    12,198.56x = 16,818.70 × 9,958.16
  4. Step 4: Simplify right side
    12,198.56x = 167,483,305.59
  5. Step 5: Solve for x
    x = 167,483,305.59/12,198.56
  6. Step 6: Final answer
    x = 13,729.76

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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.