Home / 13,231.37-18,255.56-8,518.38

Finding the Fourth Proportional to 13,231.37, 18,255.56 and 8,518.38

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Solution

The fourth proportional to 13,231.37, 18,255.56 and 8,518.38 is: 11,752.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,231.37 : 18,255.56 = 8,518.38 : x
  2. Step 2: Convert to fraction form
    13,231.37/18,255.56 = 8,518.38/x
  3. Step 3: Cross multiply
    13,231.37x = 18,255.56 × 8,518.38
  4. Step 4: Simplify right side
    13,231.37x = 155,507,754.60
  5. Step 5: Solve for x
    x = 155,507,754.60/13,231.37
  6. Step 6: Final answer
    x = 11,752.96

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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.