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Finding the Fourth Proportional to 13,602.92, 20,406.42 and 7,363.80

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Solution

The fourth proportional to 13,602.92, 20,406.42 and 7,363.80 is: 11,046.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,602.92 : 20,406.42 = 7,363.80 : x
  2. Step 2: Convert to fraction form
    13,602.92/20,406.42 = 7,363.80/x
  3. Step 3: Cross multiply
    13,602.92x = 20,406.42 × 7,363.80
  4. Step 4: Simplify right side
    13,602.92x = 150,268,795.60
  5. Step 5: Solve for x
    x = 150,268,795.60/13,602.92
  6. Step 6: Final answer
    x = 11,046.81

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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.