Home / 11,511.38-15,816.84-9,149.42

Finding the Fourth Proportional to 11,511.38, 15,816.84 and 9,149.42

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Solution

The fourth proportional to 11,511.38, 15,816.84 and 9,149.42 is: 12,571.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,511.38 : 15,816.84 = 9,149.42 : x
  2. Step 2: Convert to fraction form
    11,511.38/15,816.84 = 9,149.42/x
  3. Step 3: Cross multiply
    11,511.38x = 15,816.84 × 9,149.42
  4. Step 4: Simplify right side
    11,511.38x = 144,714,833.15
  5. Step 5: Solve for x
    x = 144,714,833.15/11,511.38
  6. Step 6: Final answer
    x = 12,571.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.