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Finding the Fourth Proportional to 13,173.53, 18,194.45 and 8,859.12

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Solution

The fourth proportional to 13,173.53, 18,194.45 and 8,859.12 is: 12,235.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.53 : 18,194.45 = 8,859.12 : x
  2. Step 2: Convert to fraction form
    13,173.53/18,194.45 = 8,859.12/x
  3. Step 3: Cross multiply
    13,173.53x = 18,194.45 × 8,859.12
  4. Step 4: Simplify right side
    13,173.53x = 161,186,771.59
  5. Step 5: Solve for x
    x = 161,186,771.59/13,173.53
  6. Step 6: Final answer
    x = 12,235.66

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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.