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Finding the Fourth Proportional to 18,349.62, 25,321.78 and 9,965.94

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Solution

The fourth proportional to 18,349.62, 25,321.78 and 9,965.94 is: 13,752.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,349.62 : 25,321.78 = 9,965.94 : x
  2. Step 2: Convert to fraction form
    18,349.62/25,321.78 = 9,965.94/x
  3. Step 3: Cross multiply
    18,349.62x = 25,321.78 × 9,965.94
  4. Step 4: Simplify right side
    18,349.62x = 252,355,340.17
  5. Step 5: Solve for x
    x = 252,355,340.17/18,349.62
  6. Step 6: Final answer
    x = 13,752.62

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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.