Home / 20,519.73-28,322.62-13,369.28

Finding the Fourth Proportional to 20,519.73, 28,322.62 and 13,369.28

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Solution

The fourth proportional to 20,519.73, 28,322.62 and 13,369.28 is: 18,453.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.73 : 28,322.62 = 13,369.28 : x
  2. Step 2: Convert to fraction form
    20,519.73/28,322.62 = 13,369.28/x
  3. Step 3: Cross multiply
    20,519.73x = 28,322.62 × 13,369.28
  4. Step 4: Simplify right side
    20,519.73x = 378,652,862.08
  5. Step 5: Solve for x
    x = 378,652,862.08/20,519.73
  6. Step 6: Final answer
    x = 18,453.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.