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Finding the Fourth Proportional to 36,015.90, 54,007.65 and 13,821.90

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Solution

The fourth proportional to 36,015.90, 54,007.65 and 13,821.90 is: 20,726.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,015.90 : 54,007.65 = 13,821.90 : x
  2. Step 2: Convert to fraction form
    36,015.90/54,007.65 = 13,821.90/x
  3. Step 3: Cross multiply
    36,015.90x = 54,007.65 × 13,821.90
  4. Step 4: Simplify right side
    36,015.90x = 746,488,337.54
  5. Step 5: Solve for x
    x = 746,488,337.54/36,015.90
  6. Step 6: Final answer
    x = 20,726.63

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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.