Home / 11,145.82-15,380.64-6,110.05

Finding the Fourth Proportional to 11,145.82, 15,380.64 and 6,110.05

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Solution

The fourth proportional to 11,145.82, 15,380.64 and 6,110.05 is: 8,431.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.82 : 15,380.64 = 6,110.05 : x
  2. Step 2: Convert to fraction form
    11,145.82/15,380.64 = 6,110.05/x
  3. Step 3: Cross multiply
    11,145.82x = 15,380.64 × 6,110.05
  4. Step 4: Simplify right side
    11,145.82x = 93,976,479.43
  5. Step 5: Solve for x
    x = 93,976,479.43/11,145.82
  6. Step 6: Final answer
    x = 8,431.54

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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.