Home / 20,513.88-28,309.16-11,082.44

Finding the Fourth Proportional to 20,513.88, 28,309.16 and 11,082.44

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Solution

The fourth proportional to 20,513.88, 28,309.16 and 11,082.44 is: 15,293.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.88 : 28,309.16 = 11,082.44 : x
  2. Step 2: Convert to fraction form
    20,513.88/28,309.16 = 11,082.44/x
  3. Step 3: Cross multiply
    20,513.88x = 28,309.16 × 11,082.44
  4. Step 4: Simplify right side
    20,513.88x = 313,734,567.15
  5. Step 5: Solve for x
    x = 313,734,567.15/20,513.88
  6. Step 6: Final answer
    x = 15,293.77

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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.