Home / 13,471,285.70-20,206,928.55-7,788,584.90

Finding the Fourth Proportional to 13,471,285.70, 20,206,928.55 and 7,788,584.90

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Solution

The fourth proportional to 13,471,285.70, 20,206,928.55 and 7,788,584.90 is: 11,682,877.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,471,285.70 : 20,206,928.55 = 7,788,584.90 : x
  2. Step 2: Convert to fraction form
    13,471,285.70/20,206,928.55 = 7,788,584.90/x
  3. Step 3: Cross multiply
    13,471,285.70x = 20,206,928.55 × 7,788,584.90
  4. Step 4: Simplify right side
    13,471,285.70x = 157,383,378,579,908.91
  5. Step 5: Solve for x
    x = 157,383,378,579,908.91/13,471,285.70
  6. Step 6: Final answer
    x = 11,682,877.35

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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.