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Finding the Fourth Proportional to 18,451.80, 25,455.83 and 11,741.13

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Solution

The fourth proportional to 18,451.80, 25,455.83 and 11,741.13 is: 16,197.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,451.80 : 25,455.83 = 11,741.13 : x
  2. Step 2: Convert to fraction form
    18,451.80/25,455.83 = 11,741.13/x
  3. Step 3: Cross multiply
    18,451.80x = 25,455.83 × 11,741.13
  4. Step 4: Simplify right side
    18,451.80x = 298,880,150.58
  5. Step 5: Solve for x
    x = 298,880,150.58/18,451.80
  6. Step 6: Final answer
    x = 16,197.89

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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.