Home / 13,530.38-20,287.46-5,623.36

Finding the Fourth Proportional to 13,530.38, 20,287.46 and 5,623.36

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Solution

The fourth proportional to 13,530.38, 20,287.46 and 5,623.36 is: 8,431.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.38 : 20,287.46 = 5,623.36 : x
  2. Step 2: Convert to fraction form
    13,530.38/20,287.46 = 5,623.36/x
  3. Step 3: Cross multiply
    13,530.38x = 20,287.46 × 5,623.36
  4. Step 4: Simplify right side
    13,530.38x = 114,083,654.41
  5. Step 5: Solve for x
    x = 114,083,654.41/13,530.38
  6. Step 6: Final answer
    x = 8,431.67

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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.