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Finding the Fourth Proportional to 18,706.92, 28,033.65 and 13,737.57

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Solution

The fourth proportional to 18,706.92, 28,033.65 and 13,737.57 is: 20,586.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.92 : 28,033.65 = 13,737.57 : x
  2. Step 2: Convert to fraction form
    18,706.92/28,033.65 = 13,737.57/x
  3. Step 3: Cross multiply
    18,706.92x = 28,033.65 × 13,737.57
  4. Step 4: Simplify right side
    18,706.92x = 385,114,229.23
  5. Step 5: Solve for x
    x = 385,114,229.23/18,706.92
  6. Step 6: Final answer
    x = 20,586.73

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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.