Home / 11,895.21-16,415.53-6,517.80

Finding the Fourth Proportional to 11,895.21, 16,415.53 and 6,517.80

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Solution

The fourth proportional to 11,895.21, 16,415.53 and 6,517.80 is: 8,994.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,895.21 : 16,415.53 = 6,517.80 : x
  2. Step 2: Convert to fraction form
    11,895.21/16,415.53 = 6,517.80/x
  3. Step 3: Cross multiply
    11,895.21x = 16,415.53 × 6,517.80
  4. Step 4: Simplify right side
    11,895.21x = 106,993,125.14
  5. Step 5: Solve for x
    x = 106,993,125.14/11,895.21
  6. Step 6: Final answer
    x = 8,994.64

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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.