Home / 20,498,769.94-28,288,638.78-12,239,553.88

Finding the Fourth Proportional to 20,498,769.94, 28,288,638.78 and 12,239,553.88

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Solution

The fourth proportional to 20,498,769.94, 28,288,638.78 and 12,239,553.88 is: 16,890,785.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498,769.94 : 28,288,638.78 = 12,239,553.88 : x
  2. Step 2: Convert to fraction form
    20,498,769.94/28,288,638.78 = 12,239,553.88/x
  3. Step 3: Cross multiply
    20,498,769.94x = 28,288,638.78 × 12,239,553.88
  4. Step 4: Simplify right side
    20,498,769.94x = 346,240,318,539,667.50
  5. Step 5: Solve for x
    x = 346,240,318,539,667.50/20,498,769.94
  6. Step 6: Final answer
    x = 16,890,785.13

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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.