Home / 12,115,899.20-18,183,763.20-12,021,420.80

Finding the Fourth Proportional to 12,115,899.20, 18,183,763.20 and 12,021,420.80

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Solution

The fourth proportional to 12,115,899.20, 18,183,763.20 and 12,021,420.80 is: 18,041,968.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115,899.20 : 18,183,763.20 = 12,021,420.80 : x
  2. Step 2: Convert to fraction form
    12,115,899.20/18,183,763.20 = 12,021,420.80/x
  3. Step 3: Cross multiply
    12,115,899.20x = 18,183,763.20 × 12,021,420.80
  4. Step 4: Simplify right side
    12,115,899.20x = 218,594,669,154,754.56
  5. Step 5: Solve for x
    x = 218,594,669,154,754.56/12,115,899.20
  6. Step 6: Final answer
    x = 18,041,968.29

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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.