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Finding the Fourth Proportional to 18,191,978.10, 27,287,967.15 and 11,017,524.60

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Solution

The fourth proportional to 18,191,978.10, 27,287,967.15 and 11,017,524.60 is: 16,526,286.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191,978.10 : 27,287,967.15 = 11,017,524.60 : x
  2. Step 2: Convert to fraction form
    18,191,978.10/27,287,967.15 = 11,017,524.60/x
  3. Step 3: Cross multiply
    18,191,978.10x = 27,287,967.15 × 11,017,524.60
  4. Step 4: Simplify right side
    18,191,978.10x = 300,645,849,359,116.88
  5. Step 5: Solve for x
    x = 300,645,849,359,116.88/18,191,978.10
  6. Step 6: Final answer
    x = 16,526,286.90

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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.