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Finding the Fourth Proportional to 36,358.80, 54,541.80 and 12,662.70

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Solution

The fourth proportional to 36,358.80, 54,541.80 and 12,662.70 is: 18,995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,358.80 : 54,541.80 = 12,662.70 : x
  2. Step 2: Convert to fraction form
    36,358.80/54,541.80 = 12,662.70/x
  3. Step 3: Cross multiply
    36,358.80x = 54,541.80 × 12,662.70
  4. Step 4: Simplify right side
    36,358.80x = 690,646,450.86
  5. Step 5: Solve for x
    x = 690,646,450.86/36,358.80
  6. Step 6: Final answer
    x = 18,995.30

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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.