Home / 12,190.84-16,821.27-6,885.54

Finding the Fourth Proportional to 12,190.84, 16,821.27 and 6,885.54

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Solution

The fourth proportional to 12,190.84, 16,821.27 and 6,885.54 is: 9,500.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.84 : 16,821.27 = 6,885.54 : x
  2. Step 2: Convert to fraction form
    12,190.84/16,821.27 = 6,885.54/x
  3. Step 3: Cross multiply
    12,190.84x = 16,821.27 × 6,885.54
  4. Step 4: Simplify right side
    12,190.84x = 115,823,527.44
  5. Step 5: Solve for x
    x = 115,823,527.44/12,190.84
  6. Step 6: Final answer
    x = 9,500.87

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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.