Home / 13,221.56-18,245.82-7,253.78

Finding the Fourth Proportional to 13,221.56, 18,245.82 and 7,253.78

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Solution

The fourth proportional to 13,221.56, 18,245.82 and 7,253.78 is: 10,010.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.56 : 18,245.82 = 7,253.78 : x
  2. Step 2: Convert to fraction form
    13,221.56/18,245.82 = 7,253.78/x
  3. Step 3: Cross multiply
    13,221.56x = 18,245.82 × 7,253.78
  4. Step 4: Simplify right side
    13,221.56x = 132,351,164.20
  5. Step 5: Solve for x
    x = 132,351,164.20/13,221.56
  6. Step 6: Final answer
    x = 10,010.25

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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.