Home / 11,115.15-16,685.75-8,776.73

Finding the Fourth Proportional to 11,115.15, 16,685.75 and 8,776.73

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Solution

The fourth proportional to 11,115.15, 16,685.75 and 8,776.73 is: 13,175.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.15 : 16,685.75 = 8,776.73 : x
  2. Step 2: Convert to fraction form
    11,115.15/16,685.75 = 8,776.73/x
  3. Step 3: Cross multiply
    11,115.15x = 16,685.75 × 8,776.73
  4. Step 4: Simplify right side
    11,115.15x = 146,446,195.29
  5. Step 5: Solve for x
    x = 146,446,195.29/11,115.15
  6. Step 6: Final answer
    x = 13,175.37

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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.