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Finding the Fourth Proportional to 13,843.72, 20,768.88 and 4,483.75

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Solution

The fourth proportional to 13,843.72, 20,768.88 and 4,483.75 is: 6,726.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,843.72 : 20,768.88 = 4,483.75 : x
  2. Step 2: Convert to fraction form
    13,843.72/20,768.88 = 4,483.75/x
  3. Step 3: Cross multiply
    13,843.72x = 20,768.88 × 4,483.75
  4. Step 4: Simplify right side
    13,843.72x = 93,122,465.70
  5. Step 5: Solve for x
    x = 93,122,465.70/13,843.72
  6. Step 6: Final answer
    x = 6,726.69

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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.