Home / 19,947.70-29,898.19-12,822.85

Finding the Fourth Proportional to 19,947.70, 29,898.19 and 12,822.85

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Solution

The fourth proportional to 19,947.70, 29,898.19 and 12,822.85 is: 19,219.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,947.70 : 29,898.19 = 12,822.85 : x
  2. Step 2: Convert to fraction form
    19,947.70/29,898.19 = 12,822.85/x
  3. Step 3: Cross multiply
    19,947.70x = 29,898.19 × 12,822.85
  4. Step 4: Simplify right side
    19,947.70x = 383,380,005.64
  5. Step 5: Solve for x
    x = 383,380,005.64/19,947.70
  6. Step 6: Final answer
    x = 19,219.26

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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.