Home / 19,946.70-29,896.70-12,821.85

Finding the Fourth Proportional to 19,946.70, 29,896.70 and 12,821.85

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Solution

The fourth proportional to 19,946.70, 29,896.70 and 12,821.85 is: 19,217.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,946.70 : 29,896.70 = 12,821.85 : x
  2. Step 2: Convert to fraction form
    19,946.70/29,896.70 = 12,821.85/x
  3. Step 3: Cross multiply
    19,946.70x = 29,896.70 × 12,821.85
  4. Step 4: Simplify right side
    19,946.70x = 383,330,938.79
  5. Step 5: Solve for x
    x = 383,330,938.79/19,946.70
  6. Step 6: Final answer
    x = 19,217.76

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1.5x scale

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.