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Finding the Fourth Proportional to 13,737.60, 20,611.80 and 8,193.60

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Solution

The fourth proportional to 13,737.60, 20,611.80 and 8,193.60 is: 12,293.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,737.60 : 20,611.80 = 8,193.60 : x
  2. Step 2: Convert to fraction form
    13,737.60/20,611.80 = 8,193.60/x
  3. Step 3: Cross multiply
    13,737.60x = 20,611.80 × 8,193.60
  4. Step 4: Simplify right side
    13,737.60x = 168,884,844.48
  5. Step 5: Solve for x
    x = 168,884,844.48/13,737.60
  6. Step 6: Final answer
    x = 12,293.62

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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.