Home / 11,986.77-17,989.57-8,314.84

Finding the Fourth Proportional to 11,986.77, 17,989.57 and 8,314.84

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Solution

The fourth proportional to 11,986.77, 17,989.57 and 8,314.84 is: 12,478.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.77 : 17,989.57 = 8,314.84 : x
  2. Step 2: Convert to fraction form
    11,986.77/17,989.57 = 8,314.84/x
  3. Step 3: Cross multiply
    11,986.77x = 17,989.57 × 8,314.84
  4. Step 4: Simplify right side
    11,986.77x = 149,580,306.27
  5. Step 5: Solve for x
    x = 149,580,306.27/11,986.77
  6. Step 6: Final answer
    x = 12,478.78

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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.