Home / 13,490.96-20,237.79-3,631.28

Finding the Fourth Proportional to 13,490.96, 20,237.79 and 3,631.28

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Solution

The fourth proportional to 13,490.96, 20,237.79 and 3,631.28 is: 5,447.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.96 : 20,237.79 = 3,631.28 : x
  2. Step 2: Convert to fraction form
    13,490.96/20,237.79 = 3,631.28/x
  3. Step 3: Cross multiply
    13,490.96x = 20,237.79 × 3,631.28
  4. Step 4: Simplify right side
    13,490.96x = 73,489,082.07
  5. Step 5: Solve for x
    x = 73,489,082.07/13,490.96
  6. Step 6: Final answer
    x = 5,447.28

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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.