Home / 20,677,647.72-28,538,362.62-12,422,305.92

Finding the Fourth Proportional to 20,677,647.72, 28,538,362.62 and 12,422,305.92

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Solution

The fourth proportional to 20,677,647.72, 28,538,362.62 and 12,422,305.92 is: 17,144,709.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677,647.72 : 28,538,362.62 = 12,422,305.92 : x
  2. Step 2: Convert to fraction form
    20,677,647.72/28,538,362.62 = 12,422,305.92/x
  3. Step 3: Cross multiply
    20,677,647.72x = 28,538,362.62 × 12,422,305.92
  4. Step 4: Simplify right side
    20,677,647.72x = 354,512,270,921,532.75
  5. Step 5: Solve for x
    x = 354,512,270,921,532.75/20,677,647.72
  6. Step 6: Final answer
    x = 17,144,709.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.