Home / 19,220.72-28,793.78-12,626.90

Finding the Fourth Proportional to 19,220.72, 28,793.78 and 12,626.90

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Solution

The fourth proportional to 19,220.72, 28,793.78 and 12,626.90 is: 18,915.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,220.72 : 28,793.78 = 12,626.90 : x
  2. Step 2: Convert to fraction form
    19,220.72/28,793.78 = 12,626.90/x
  3. Step 3: Cross multiply
    19,220.72x = 28,793.78 × 12,626.90
  4. Step 4: Simplify right side
    19,220.72x = 363,576,180.68
  5. Step 5: Solve for x
    x = 363,576,180.68/19,220.72
  6. Step 6: Final answer
    x = 18,915.85

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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.