Home / 13,245.56-18,278.80-7,195.75

Finding the Fourth Proportional to 13,245.56, 18,278.80 and 7,195.75

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Solution

The fourth proportional to 13,245.56, 18,278.80 and 7,195.75 is: 9,930.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.56 : 18,278.80 = 7,195.75 : x
  2. Step 2: Convert to fraction form
    13,245.56/18,278.80 = 7,195.75/x
  3. Step 3: Cross multiply
    13,245.56x = 18,278.80 × 7,195.75
  4. Step 4: Simplify right side
    13,245.56x = 131,529,616.27
  5. Step 5: Solve for x
    x = 131,529,616.27/13,245.56
  6. Step 6: Final answer
    x = 9,930.09

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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.