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Finding the Fourth Proportional to 12,662.12, 18,944.99 and 7,646.03

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Solution

The fourth proportional to 12,662.12, 18,944.99 and 7,646.03 is: 11,439.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.12 : 18,944.99 = 7,646.03 : x
  2. Step 2: Convert to fraction form
    12,662.12/18,944.99 = 7,646.03/x
  3. Step 3: Cross multiply
    12,662.12x = 18,944.99 × 7,646.03
  4. Step 4: Simplify right side
    12,662.12x = 144,853,961.89
  5. Step 5: Solve for x
    x = 144,853,961.89/12,662.12
  6. Step 6: Final answer
    x = 11,439.95

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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.