Home / 11,678.20-17,520.09-3,887.08

Finding the Fourth Proportional to 11,678.20, 17,520.09 and 3,887.08

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Solution

The fourth proportional to 11,678.20, 17,520.09 and 3,887.08 is: 5,831.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.20 : 17,520.09 = 3,887.08 : x
  2. Step 2: Convert to fraction form
    11,678.20/17,520.09 = 3,887.08/x
  3. Step 3: Cross multiply
    11,678.20x = 17,520.09 × 3,887.08
  4. Step 4: Simplify right side
    11,678.20x = 68,101,991.44
  5. Step 5: Solve for x
    x = 68,101,991.44/11,678.20
  6. Step 6: Final answer
    x = 5,831.55

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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.