Home / 13,891.08-20,818.51-12,131.91

Finding the Fourth Proportional to 13,891.08, 20,818.51 and 12,131.91

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Solution

The fourth proportional to 13,891.08, 20,818.51 and 12,131.91 is: 18,182.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.08 : 20,818.51 = 12,131.91 : x
  2. Step 2: Convert to fraction form
    13,891.08/20,818.51 = 12,131.91/x
  3. Step 3: Cross multiply
    13,891.08x = 20,818.51 × 12,131.91
  4. Step 4: Simplify right side
    13,891.08x = 252,568,259.32
  5. Step 5: Solve for x
    x = 252,568,259.32/13,891.08
  6. Step 6: Final answer
    x = 18,182.04

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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.