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Finding the Fourth Proportional to 18,276.80, 27,382.80 and 17,110.40

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Solution

The fourth proportional to 18,276.80, 27,382.80 and 17,110.40 is: 25,635.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,276.80 : 27,382.80 = 17,110.40 : x
  2. Step 2: Convert to fraction form
    18,276.80/27,382.80 = 17,110.40/x
  3. Step 3: Cross multiply
    18,276.80x = 27,382.80 × 17,110.40
  4. Step 4: Simplify right side
    18,276.80x = 468,530,661.12
  5. Step 5: Solve for x
    x = 468,530,661.12/18,276.80
  6. Step 6: Final answer
    x = 25,635.27

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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.