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Finding the Fourth Proportional to 18,381,946.20, 27,519,775.20 and 17,850,505.20

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Solution

The fourth proportional to 18,381,946.20, 27,519,775.20 and 17,850,505.20 is: 26,724,150.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381,946.20 : 27,519,775.20 = 17,850,505.20 : x
  2. Step 2: Convert to fraction form
    18,381,946.20/27,519,775.20 = 17,850,505.20/x
  3. Step 3: Cross multiply
    18,381,946.20x = 27,519,775.20 × 17,850,505.20
  4. Step 4: Simplify right side
    18,381,946.20x = 491,241,890,310,431
  5. Step 5: Solve for x
    x = 491,241,890,310,431/18,381,946.20
  6. Step 6: Final answer
    x = 26,724,150.15

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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.