Home / 13,190.25-18,199.64-8,086.86

Finding the Fourth Proportional to 13,190.25, 18,199.64 and 8,086.86

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Solution

The fourth proportional to 13,190.25, 18,199.64 and 8,086.86 is: 11,158.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.25 : 18,199.64 = 8,086.86 : x
  2. Step 2: Convert to fraction form
    13,190.25/18,199.64 = 8,086.86/x
  3. Step 3: Cross multiply
    13,190.25x = 18,199.64 × 8,086.86
  4. Step 4: Simplify right side
    13,190.25x = 147,177,900.30
  5. Step 5: Solve for x
    x = 147,177,900.30/13,190.25
  6. Step 6: Final answer
    x = 11,158.08

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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.