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Finding the Fourth Proportional to 36,379.40, 54,569.10 and 11,755.40

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Solution

The fourth proportional to 36,379.40, 54,569.10 and 11,755.40 is: 17,633.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,379.40 : 54,569.10 = 11,755.40 : x
  2. Step 2: Convert to fraction form
    36,379.40/54,569.10 = 11,755.40/x
  3. Step 3: Cross multiply
    36,379.40x = 54,569.10 × 11,755.40
  4. Step 4: Simplify right side
    36,379.40x = 641,481,598.14
  5. Step 5: Solve for x
    x = 641,481,598.14/36,379.40
  6. Step 6: Final answer
    x = 17,633.10

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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.