Home / 13,418.18-18,519.21-12,827.54

Finding the Fourth Proportional to 13,418.18, 18,519.21 and 12,827.54

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Solution

The fourth proportional to 13,418.18, 18,519.21 and 12,827.54 is: 17,704.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.18 : 18,519.21 = 12,827.54 : x
  2. Step 2: Convert to fraction form
    13,418.18/18,519.21 = 12,827.54/x
  3. Step 3: Cross multiply
    13,418.18x = 18,519.21 × 12,827.54
  4. Step 4: Simplify right side
    13,418.18x = 237,555,907.04
  5. Step 5: Solve for x
    x = 237,555,907.04/13,418.18
  6. Step 6: Final answer
    x = 17,704.03

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1.5x scale

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.