Home / 13,405.32-18,496.68-8,100.16

Finding the Fourth Proportional to 13,405.32, 18,496.68 and 8,100.16

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Solution

The fourth proportional to 13,405.32, 18,496.68 and 8,100.16 is: 11,176.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.32 : 18,496.68 = 8,100.16 : x
  2. Step 2: Convert to fraction form
    13,405.32/18,496.68 = 8,100.16/x
  3. Step 3: Cross multiply
    13,405.32x = 18,496.68 × 8,100.16
  4. Step 4: Simplify right side
    13,405.32x = 149,826,067.47
  5. Step 5: Solve for x
    x = 149,826,067.47/13,405.32
  6. Step 6: Final answer
    x = 11,176.61

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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.