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Finding the Fourth Proportional to 12,543.92, 18,818.40 and 8,847.44

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Solution

The fourth proportional to 12,543.92, 18,818.40 and 8,847.44 is: 13,272.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.92 : 18,818.40 = 8,847.44 : x
  2. Step 2: Convert to fraction form
    12,543.92/18,818.40 = 8,847.44/x
  3. Step 3: Cross multiply
    12,543.92x = 18,818.40 × 8,847.44
  4. Step 4: Simplify right side
    12,543.92x = 166,494,664.90
  5. Step 5: Solve for x
    x = 166,494,664.90/12,543.92
  6. Step 6: Final answer
    x = 13,272.94

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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.