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Finding the Fourth Proportional to 43,891.35, 65,821.45 and 15,803.88

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Solution

The fourth proportional to 43,891.35, 65,821.45 and 15,803.88 is: 23,700.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,891.35 : 65,821.45 = 15,803.88 : x
  2. Step 2: Convert to fraction form
    43,891.35/65,821.45 = 15,803.88/x
  3. Step 3: Cross multiply
    43,891.35x = 65,821.45 × 15,803.88
  4. Step 4: Simplify right side
    43,891.35x = 1,040,234,297.23
  5. Step 5: Solve for x
    x = 1,040,234,297.23/43,891.35
  6. Step 6: Final answer
    x = 23,700.21

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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.