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Finding the Fourth Proportional to 36,612.81, 54,894.92 and 13,236.21

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Solution

The fourth proportional to 36,612.81, 54,894.92 and 13,236.21 is: 19,845.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,612.81 : 54,894.92 = 13,236.21 : x
  2. Step 2: Convert to fraction form
    36,612.81/54,894.92 = 13,236.21/x
  3. Step 3: Cross multiply
    36,612.81x = 54,894.92 × 13,236.21
  4. Step 4: Simplify right side
    36,612.81x = 726,600,622.87
  5. Step 5: Solve for x
    x = 726,600,622.87/36,612.81
  6. Step 6: Final answer
    x = 19,845.53

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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.