Home / 13,418.94-20,127.90-5,519.26

Finding the Fourth Proportional to 13,418.94, 20,127.90 and 5,519.26

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Solution

The fourth proportional to 13,418.94, 20,127.90 and 5,519.26 is: 8,278.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.94 : 20,127.90 = 5,519.26 : x
  2. Step 2: Convert to fraction form
    13,418.94/20,127.90 = 5,519.26/x
  3. Step 3: Cross multiply
    13,418.94x = 20,127.90 × 5,519.26
  4. Step 4: Simplify right side
    13,418.94x = 111,091,113.35
  5. Step 5: Solve for x
    x = 111,091,113.35/13,418.94
  6. Step 6: Final answer
    x = 8,278.68

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1.5x scale

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.