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Finding the Fourth Proportional to 33,720.68, 50,543.34 and 12,640.44

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Solution

The fourth proportional to 33,720.68, 50,543.34 and 12,640.44 is: 18,946.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,720.68 : 50,543.34 = 12,640.44 : x
  2. Step 2: Convert to fraction form
    33,720.68/50,543.34 = 12,640.44/x
  3. Step 3: Cross multiply
    33,720.68x = 50,543.34 × 12,640.44
  4. Step 4: Simplify right side
    33,720.68x = 638,890,056.67
  5. Step 5: Solve for x
    x = 638,890,056.67/33,720.68
  6. Step 6: Final answer
    x = 18,946.54

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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.