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Finding the Fourth Proportional to 18,323.67, 25,286.67 and 9,940.17

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Solution

The fourth proportional to 18,323.67, 25,286.67 and 9,940.17 is: 13,717.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,323.67 : 25,286.67 = 9,940.17 : x
  2. Step 2: Convert to fraction form
    18,323.67/25,286.67 = 9,940.17/x
  3. Step 3: Cross multiply
    18,323.67x = 25,286.67 × 9,940.17
  4. Step 4: Simplify right side
    18,323.67x = 251,353,798.53
  5. Step 5: Solve for x
    x = 251,353,798.53/18,323.67
  6. Step 6: Final answer
    x = 13,717.44

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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.