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Finding the Fourth Proportional to 13,895.92, 20,843.79 and 3,507.67

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Solution

The fourth proportional to 13,895.92, 20,843.79 and 3,507.67 is: 5,261.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,895.92 : 20,843.79 = 3,507.67 : x
  2. Step 2: Convert to fraction form
    13,895.92/20,843.79 = 3,507.67/x
  3. Step 3: Cross multiply
    13,895.92x = 20,843.79 × 3,507.67
  4. Step 4: Simplify right side
    13,895.92x = 73,113,136.87
  5. Step 5: Solve for x
    x = 73,113,136.87/13,895.92
  6. Step 6: Final answer
    x = 5,261.48

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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.