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Finding the Fourth Proportional to 18,179,978.20, 27,269,967.30 and 8,614,040.20

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Solution

The fourth proportional to 18,179,978.20, 27,269,967.30 and 8,614,040.20 is: 12,921,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,179,978.20 : 27,269,967.30 = 8,614,040.20 : x
  2. Step 2: Convert to fraction form
    18,179,978.20/27,269,967.30 = 8,614,040.20/x
  3. Step 3: Cross multiply
    18,179,978.20x = 27,269,967.30 × 8,614,040.20
  4. Step 4: Simplify right side
    18,179,978.20x = 234,904,594,574,885.44
  5. Step 5: Solve for x
    x = 234,904,594,574,885.44/18,179,978.20
  6. Step 6: Final answer
    x = 12,921,060.30

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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.