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Finding the Fourth Proportional to 18,662.94, 25,742.75 and 11,937.92

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Solution

The fourth proportional to 18,662.94, 25,742.75 and 11,937.92 is: 16,466.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.94 : 25,742.75 = 11,937.92 : x
  2. Step 2: Convert to fraction form
    18,662.94/25,742.75 = 11,937.92/x
  3. Step 3: Cross multiply
    18,662.94x = 25,742.75 × 11,937.92
  4. Step 4: Simplify right side
    18,662.94x = 307,314,701.68
  5. Step 5: Solve for x
    x = 307,314,701.68/18,662.94
  6. Step 6: Final answer
    x = 16,466.58

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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.