Home / 19,863.36-29,652.90-19,170.78

Finding the Fourth Proportional to 19,863.36, 29,652.90 and 19,170.78

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Solution

The fourth proportional to 19,863.36, 29,652.90 and 19,170.78 is: 28,618.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,863.36 : 29,652.90 = 19,170.78 : x
  2. Step 2: Convert to fraction form
    19,863.36/29,652.90 = 19,170.78/x
  3. Step 3: Cross multiply
    19,863.36x = 29,652.90 × 19,170.78
  4. Step 4: Simplify right side
    19,863.36x = 568,469,222.26
  5. Step 5: Solve for x
    x = 568,469,222.26/19,863.36
  6. Step 6: Final answer
    x = 28,618.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.