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Finding the Fourth Proportional to 18,322.57, 25,286.97 and 11,152.99

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Solution

The fourth proportional to 18,322.57, 25,286.97 and 11,152.99 is: 15,392.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,322.57 : 25,286.97 = 11,152.99 : x
  2. Step 2: Convert to fraction form
    18,322.57/25,286.97 = 11,152.99/x
  3. Step 3: Cross multiply
    18,322.57x = 25,286.97 × 11,152.99
  4. Step 4: Simplify right side
    18,322.57x = 282,025,323.54
  5. Step 5: Solve for x
    x = 282,025,323.54/18,322.57
  6. Step 6: Final answer
    x = 15,392.24

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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.