Home / 13,198.50-18,222.21-8,490.96

Finding the Fourth Proportional to 13,198.50, 18,222.21 and 8,490.96

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Solution

The fourth proportional to 13,198.50, 18,222.21 and 8,490.96 is: 11,722.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.50 : 18,222.21 = 8,490.96 : x
  2. Step 2: Convert to fraction form
    13,198.50/18,222.21 = 8,490.96/x
  3. Step 3: Cross multiply
    13,198.50x = 18,222.21 × 8,490.96
  4. Step 4: Simplify right side
    13,198.50x = 154,724,056.22
  5. Step 5: Solve for x
    x = 154,724,056.22/13,198.50
  6. Step 6: Final answer
    x = 11,722.85

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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.