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Finding the Fourth Proportional to 12,640.82, 18,944.96 and 9,259.27

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Solution

The fourth proportional to 12,640.82, 18,944.96 and 9,259.27 is: 13,876.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.82 : 18,944.96 = 9,259.27 : x
  2. Step 2: Convert to fraction form
    12,640.82/18,944.96 = 9,259.27/x
  3. Step 3: Cross multiply
    12,640.82x = 18,944.96 × 9,259.27
  4. Step 4: Simplify right side
    12,640.82x = 175,416,406.12
  5. Step 5: Solve for x
    x = 175,416,406.12/12,640.82
  6. Step 6: Final answer
    x = 13,876.99

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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.