Home / 12,631,999.20-18,920,005.20-9,782,872.80

Finding the Fourth Proportional to 12,631,999.20, 18,920,005.20 and 9,782,872.80

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Solution

The fourth proportional to 12,631,999.20, 18,920,005.20 and 9,782,872.80 is: 14,652,629.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631,999.20 : 18,920,005.20 = 9,782,872.80 : x
  2. Step 2: Convert to fraction form
    12,631,999.20/18,920,005.20 = 9,782,872.80/x
  3. Step 3: Cross multiply
    12,631,999.20x = 18,920,005.20 × 9,782,872.80
  4. Step 4: Simplify right side
    12,631,999.20x = 185,092,004,246,938.56
  5. Step 5: Solve for x
    x = 185,092,004,246,938.56/12,631,999.20
  6. Step 6: Final answer
    x = 14,652,629.51

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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.