Home / 13,418.49-20,127.75-3,558.15

Finding the Fourth Proportional to 13,418.49, 20,127.75 and 3,558.15

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Solution

The fourth proportional to 13,418.49, 20,127.75 and 3,558.15 is: 5,337.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.49 : 20,127.75 = 3,558.15 : x
  2. Step 2: Convert to fraction form
    13,418.49/20,127.75 = 3,558.15/x
  3. Step 3: Cross multiply
    13,418.49x = 20,127.75 × 3,558.15
  4. Step 4: Simplify right side
    13,418.49x = 71,617,553.66
  5. Step 5: Solve for x
    x = 71,617,553.66/13,418.49
  6. Step 6: Final answer
    x = 5,337.23

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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.