Home / 11,115.50-16,678.10-4,188.38

Finding the Fourth Proportional to 11,115.50, 16,678.10 and 4,188.38

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Solution

The fourth proportional to 11,115.50, 16,678.10 and 4,188.38 is: 6,284.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.50 : 16,678.10 = 4,188.38 : x
  2. Step 2: Convert to fraction form
    11,115.50/16,678.10 = 4,188.38/x
  3. Step 3: Cross multiply
    11,115.50x = 16,678.10 × 4,188.38
  4. Step 4: Simplify right side
    11,115.50x = 69,854,147.56
  5. Step 5: Solve for x
    x = 69,854,147.56/11,115.50
  6. Step 6: Final answer
    x = 6,284.39

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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.