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Finding the Fourth Proportional to 18,662.40, 27,912.60 and 16,702.20

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Solution

The fourth proportional to 18,662.40, 27,912.60 and 16,702.20 is: 24,980.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.40 : 27,912.60 = 16,702.20 : x
  2. Step 2: Convert to fraction form
    18,662.40/27,912.60 = 16,702.20/x
  3. Step 3: Cross multiply
    18,662.40x = 27,912.60 × 16,702.20
  4. Step 4: Simplify right side
    18,662.40x = 466,201,827.72
  5. Step 5: Solve for x
    x = 466,201,827.72/18,662.40
  6. Step 6: Final answer
    x = 24,980.81

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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.