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Finding the Fourth Proportional to 18,844,690.56, 28,269,679.92 and 9,260,446.56

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Solution

The fourth proportional to 18,844,690.56, 28,269,679.92 and 9,260,446.56 is: 13,891,969.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,844,690.56 : 28,269,679.92 = 9,260,446.56 : x
  2. Step 2: Convert to fraction form
    18,844,690.56/28,269,679.92 = 9,260,446.56/x
  3. Step 3: Cross multiply
    18,844,690.56x = 28,269,679.92 × 9,260,446.56
  4. Step 4: Simplify right side
    18,844,690.56x = 261,789,860,167,465.09
  5. Step 5: Solve for x
    x = 261,789,860,167,465.09/18,844,690.56
  6. Step 6: Final answer
    x = 13,891,969.16

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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.