Home / 11,975.62-16,512.68-8,986.72

Finding the Fourth Proportional to 11,975.62, 16,512.68 and 8,986.72

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Solution

The fourth proportional to 11,975.62, 16,512.68 and 8,986.72 is: 12,391.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,975.62 : 16,512.68 = 8,986.72 : x
  2. Step 2: Convert to fraction form
    11,975.62/16,512.68 = 8,986.72/x
  3. Step 3: Cross multiply
    11,975.62x = 16,512.68 × 8,986.72
  4. Step 4: Simplify right side
    11,975.62x = 148,394,831.61
  5. Step 5: Solve for x
    x = 148,394,831.61/11,975.62
  6. Step 6: Final answer
    x = 12,391.41

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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.