Home / 13,427.44-18,531.12-8,123.56

Finding the Fourth Proportional to 13,427.44, 18,531.12 and 8,123.56

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Solution

The fourth proportional to 13,427.44, 18,531.12 and 8,123.56 is: 11,211.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.44 : 18,531.12 = 8,123.56 : x
  2. Step 2: Convert to fraction form
    13,427.44/18,531.12 = 8,123.56/x
  3. Step 3: Cross multiply
    13,427.44x = 18,531.12 × 8,123.56
  4. Step 4: Simplify right side
    13,427.44x = 150,538,665.19
  5. Step 5: Solve for x
    x = 150,538,665.19/13,427.44
  6. Step 6: Final answer
    x = 11,211.27

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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.