Home / 12,115,835.20-18,183,667.20-12,021,356.80

Finding the Fourth Proportional to 12,115,835.20, 18,183,667.20 and 12,021,356.80

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Solution

The fourth proportional to 12,115,835.20, 18,183,667.20 and 12,021,356.80 is: 18,041,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115,835.20 : 18,183,667.20 = 12,021,356.80 : x
  2. Step 2: Convert to fraction form
    12,115,835.20/18,183,667.20 = 12,021,356.80/x
  3. Step 3: Cross multiply
    12,115,835.20x = 18,183,667.20 × 12,021,356.80
  4. Step 4: Simplify right side
    12,115,835.20x = 218,592,351,343,656.97
  5. Step 5: Solve for x
    x = 218,592,351,343,656.97/12,115,835.20
  6. Step 6: Final answer
    x = 18,041,872.29

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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.