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Finding the Fourth Proportional to 12,604.99, 18,882.88 and 7,662.37

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Solution

The fourth proportional to 12,604.99, 18,882.88 and 7,662.37 is: 11,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,604.99 : 18,882.88 = 7,662.37 : x
  2. Step 2: Convert to fraction form
    12,604.99/18,882.88 = 7,662.37/x
  3. Step 3: Cross multiply
    12,604.99x = 18,882.88 × 7,662.37
  4. Step 4: Simplify right side
    12,604.99x = 144,687,546.86
  5. Step 5: Solve for x
    x = 144,687,546.86/12,604.99
  6. Step 6: Final answer
    x = 11,478.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.