Home / 13,581.27-20,388.31-12,892.37

Finding the Fourth Proportional to 13,581.27, 20,388.31 and 12,892.37

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Solution

The fourth proportional to 13,581.27, 20,388.31 and 12,892.37 is: 19,354.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.27 : 20,388.31 = 12,892.37 : x
  2. Step 2: Convert to fraction form
    13,581.27/20,388.31 = 12,892.37/x
  3. Step 3: Cross multiply
    13,581.27x = 20,388.31 × 12,892.37
  4. Step 4: Simplify right side
    13,581.27x = 262,853,502.02
  5. Step 5: Solve for x
    x = 262,853,502.02/13,581.27
  6. Step 6: Final answer
    x = 19,354.12

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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.