Home / 13,263.79-18,299.32-8,222.80

Finding the Fourth Proportional to 13,263.79, 18,299.32 and 8,222.80

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Solution

The fourth proportional to 13,263.79, 18,299.32 and 8,222.80 is: 11,344.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,263.79 : 18,299.32 = 8,222.80 : x
  2. Step 2: Convert to fraction form
    13,263.79/18,299.32 = 8,222.80/x
  3. Step 3: Cross multiply
    13,263.79x = 18,299.32 × 8,222.80
  4. Step 4: Simplify right side
    13,263.79x = 150,471,648.50
  5. Step 5: Solve for x
    x = 150,471,648.50/13,263.79
  6. Step 6: Final answer
    x = 11,344.54

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Double scale
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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.