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Finding the Fourth Proportional to 43,193.92, 64,793.60 and 13,612.80

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Solution

The fourth proportional to 43,193.92, 64,793.60 and 13,612.80 is: 20,420.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,193.92 : 64,793.60 = 13,612.80 : x
  2. Step 2: Convert to fraction form
    43,193.92/64,793.60 = 13,612.80/x
  3. Step 3: Cross multiply
    43,193.92x = 64,793.60 × 13,612.80
  4. Step 4: Simplify right side
    43,193.92x = 882,022,318.08
  5. Step 5: Solve for x
    x = 882,022,318.08/43,193.92
  6. Step 6: Final answer
    x = 20,420.06

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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.