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Finding the Fourth Proportional to 13,654.44, 18,843.90 and 8,348.40

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Solution

The fourth proportional to 13,654.44, 18,843.90 and 8,348.40 is: 11,521.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.44 : 18,843.90 = 8,348.40 : x
  2. Step 2: Convert to fraction form
    13,654.44/18,843.90 = 8,348.40/x
  3. Step 3: Cross multiply
    13,654.44x = 18,843.90 × 8,348.40
  4. Step 4: Simplify right side
    13,654.44x = 157,316,414.76
  5. Step 5: Solve for x
    x = 157,316,414.76/13,654.44
  6. Step 6: Final answer
    x = 11,521.26

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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.