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Finding the Fourth Proportional to 13,853.14, 20,787.27 and 8,021.14

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Solution

The fourth proportional to 13,853.14, 20,787.27 and 8,021.14 is: 12,036.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,853.14 : 20,787.27 = 8,021.14 : x
  2. Step 2: Convert to fraction form
    13,853.14/20,787.27 = 8,021.14/x
  3. Step 3: Cross multiply
    13,853.14x = 20,787.27 × 8,021.14
  4. Step 4: Simplify right side
    13,853.14x = 166,737,602.89
  5. Step 5: Solve for x
    x = 166,737,602.89/13,853.14
  6. Step 6: Final answer
    x = 12,036.09

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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.