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Finding the Fourth Proportional to 12,243.36, 16,902.78 and 9,366.68

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Solution

The fourth proportional to 12,243.36, 16,902.78 and 9,366.68 is: 12,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.36 : 16,902.78 = 9,366.68 : x
  2. Step 2: Convert to fraction form
    12,243.36/16,902.78 = 9,366.68/x
  3. Step 3: Cross multiply
    12,243.36x = 16,902.78 × 9,366.68
  4. Step 4: Simplify right side
    12,243.36x = 158,322,836.37
  5. Step 5: Solve for x
    x = 158,322,836.37/12,243.36
  6. Step 6: Final answer
    x = 12,931.32

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Double scale
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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.