Home / 13,519.08-20,255.40-12,149.51

Finding the Fourth Proportional to 13,519.08, 20,255.40 and 12,149.51

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Solution

The fourth proportional to 13,519.08, 20,255.40 and 12,149.51 is: 18,203.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.08 : 20,255.40 = 12,149.51 : x
  2. Step 2: Convert to fraction form
    13,519.08/20,255.40 = 12,149.51/x
  3. Step 3: Cross multiply
    13,519.08x = 20,255.40 × 12,149.51
  4. Step 4: Simplify right side
    13,519.08x = 246,093,083.58
  5. Step 5: Solve for x
    x = 246,093,083.58/13,519.08
  6. Step 6: Final answer
    x = 18,203.39

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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.