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Finding the Fourth Proportional to 43,453.44, 65,157.12 and 18,816

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Solution

The fourth proportional to 43,453.44, 65,157.12 and 18,816 is: 28,214.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,453.44 : 65,157.12 = 18,816 : x
  2. Step 2: Convert to fraction form
    43,453.44/65,157.12 = 18,816/x
  3. Step 3: Cross multiply
    43,453.44x = 65,157.12 × 18,816
  4. Step 4: Simplify right side
    43,453.44x = 1,225,996,369.92
  5. Step 5: Solve for x
    x = 1,225,996,369.92/43,453.44
  6. Step 6: Final answer
    x = 28,214.02

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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.