Home / 13,220.10-18,234.17-11,227.50

Finding the Fourth Proportional to 13,220.10, 18,234.17 and 11,227.50

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Solution

The fourth proportional to 13,220.10, 18,234.17 and 11,227.50 is: 15,485.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.10 : 18,234.17 = 11,227.50 : x
  2. Step 2: Convert to fraction form
    13,220.10/18,234.17 = 11,227.50/x
  3. Step 3: Cross multiply
    13,220.10x = 18,234.17 × 11,227.50
  4. Step 4: Simplify right side
    13,220.10x = 204,724,143.68
  5. Step 5: Solve for x
    x = 204,724,143.68/13,220.10
  6. Step 6: Final answer
    x = 15,485.82

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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.