Home / 13,747.62-20,624.19-5,431.56

Finding the Fourth Proportional to 13,747.62, 20,624.19 and 5,431.56

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Solution

The fourth proportional to 13,747.62, 20,624.19 and 5,431.56 is: 8,148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.62 : 20,624.19 = 5,431.56 : x
  2. Step 2: Convert to fraction form
    13,747.62/20,624.19 = 5,431.56/x
  3. Step 3: Cross multiply
    13,747.62x = 20,624.19 × 5,431.56
  4. Step 4: Simplify right side
    13,747.62x = 112,021,427.73
  5. Step 5: Solve for x
    x = 112,021,427.73/13,747.62
  6. Step 6: Final answer
    x = 8,148.42

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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.