Home / 13,631.40-20,435.10-9,234.60

Finding the Fourth Proportional to 13,631.40, 20,435.10 and 9,234.60

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Solution

The fourth proportional to 13,631.40, 20,435.10 and 9,234.60 is: 13,843.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.40 : 20,435.10 = 9,234.60 : x
  2. Step 2: Convert to fraction form
    13,631.40/20,435.10 = 9,234.60/x
  3. Step 3: Cross multiply
    13,631.40x = 20,435.10 × 9,234.60
  4. Step 4: Simplify right side
    13,631.40x = 188,709,974.46
  5. Step 5: Solve for x
    x = 188,709,974.46/13,631.40
  6. Step 6: Final answer
    x = 13,843.77

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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.