Home / 11,115.15-16,672.73-9,905.55

Finding the Fourth Proportional to 11,115.15, 16,672.73 and 9,905.55

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Solution

The fourth proportional to 11,115.15, 16,672.73 and 9,905.55 is: 14,858.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.15 : 16,672.73 = 9,905.55 : x
  2. Step 2: Convert to fraction form
    11,115.15/16,672.73 = 9,905.55/x
  3. Step 3: Cross multiply
    11,115.15x = 16,672.73 × 9,905.55
  4. Step 4: Simplify right side
    11,115.15x = 165,152,511.12
  5. Step 5: Solve for x
    x = 165,152,511.12/11,115.15
  6. Step 6: Final answer
    x = 14,858.33

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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.