Home / 12,471,832.20-18,707,748.30-8,362,021.80

Finding the Fourth Proportional to 12,471,832.20, 18,707,748.30 and 8,362,021.80

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Solution

The fourth proportional to 12,471,832.20, 18,707,748.30 and 8,362,021.80 is: 12,543,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471,832.20 : 18,707,748.30 = 8,362,021.80 : x
  2. Step 2: Convert to fraction form
    12,471,832.20/18,707,748.30 = 8,362,021.80/x
  3. Step 3: Cross multiply
    12,471,832.20x = 18,707,748.30 × 8,362,021.80
  4. Step 4: Simplify right side
    12,471,832.20x = 156,434,599,113,512.94
  5. Step 5: Solve for x
    x = 156,434,599,113,512.94/12,471,832.20
  6. Step 6: Final answer
    x = 12,543,032.70

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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.