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Finding the Fourth Proportional to 18,258.54, 27,387.80 and 16,640.16

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Solution

The fourth proportional to 18,258.54, 27,387.80 and 16,640.16 is: 24,960.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,258.54 : 27,387.80 = 16,640.16 : x
  2. Step 2: Convert to fraction form
    18,258.54/27,387.80 = 16,640.16/x
  3. Step 3: Cross multiply
    18,258.54x = 27,387.80 × 16,640.16
  4. Step 4: Simplify right side
    18,258.54x = 455,737,374.05
  5. Step 5: Solve for x
    x = 455,737,374.05/18,258.54
  6. Step 6: Final answer
    x = 24,960.23

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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.