Home / 11,380.10-17,106.60-8,115.80

Finding the Fourth Proportional to 11,380.10, 17,106.60 and 8,115.80

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Solution

The fourth proportional to 11,380.10, 17,106.60 and 8,115.80 is: 12,199.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,380.10 : 17,106.60 = 8,115.80 : x
  2. Step 2: Convert to fraction form
    11,380.10/17,106.60 = 8,115.80/x
  3. Step 3: Cross multiply
    11,380.10x = 17,106.60 × 8,115.80
  4. Step 4: Simplify right side
    11,380.10x = 138,833,744.28
  5. Step 5: Solve for x
    x = 138,833,744.28/11,380.10
  6. Step 6: Final answer
    x = 12,199.69

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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.