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Finding the Fourth Proportional to 18,662.85, 25,760.03 and 12,294.09

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Solution

The fourth proportional to 18,662.85, 25,760.03 and 12,294.09 is: 16,969.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.85 : 25,760.03 = 12,294.09 : x
  2. Step 2: Convert to fraction form
    18,662.85/25,760.03 = 12,294.09/x
  3. Step 3: Cross multiply
    18,662.85x = 25,760.03 × 12,294.09
  4. Step 4: Simplify right side
    18,662.85x = 316,696,127.22
  5. Step 5: Solve for x
    x = 316,696,127.22/18,662.85
  6. Step 6: Final answer
    x = 16,969.33

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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.