Home / 12,195.58-18,296.88-5,178.56

Finding the Fourth Proportional to 12,195.58, 18,296.88 and 5,178.56

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Solution

The fourth proportional to 12,195.58, 18,296.88 and 5,178.56 is: 7,769.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.58 : 18,296.88 = 5,178.56 : x
  2. Step 2: Convert to fraction form
    12,195.58/18,296.88 = 5,178.56/x
  3. Step 3: Cross multiply
    12,195.58x = 18,296.88 × 5,178.56
  4. Step 4: Simplify right side
    12,195.58x = 94,751,490.89
  5. Step 5: Solve for x
    x = 94,751,490.89/12,195.58
  6. Step 6: Final answer
    x = 7,769.33

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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.