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Finding the Fourth Proportional to 18,372,966.20, 27,559,449.30 and 8,807,028.20

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Solution

The fourth proportional to 18,372,966.20, 27,559,449.30 and 8,807,028.20 is: 13,210,542.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372,966.20 : 27,559,449.30 = 8,807,028.20 : x
  2. Step 2: Convert to fraction form
    18,372,966.20/27,559,449.30 = 8,807,028.20/x
  3. Step 3: Cross multiply
    18,372,966.20x = 27,559,449.30 × 8,807,028.20
  4. Step 4: Simplify right side
    18,372,966.20x = 242,716,847,161,570.25
  5. Step 5: Solve for x
    x = 242,716,847,161,570.25/18,372,966.20
  6. Step 6: Final answer
    x = 13,210,542.30

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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.