Home / 21,469.10-29,626.43-12,976.20

Finding the Fourth Proportional to 21,469.10, 29,626.43 and 12,976.20

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Solution

The fourth proportional to 21,469.10, 29,626.43 and 12,976.20 is: 17,906.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,469.10 : 29,626.43 = 12,976.20 : x
  2. Step 2: Convert to fraction form
    21,469.10/29,626.43 = 12,976.20/x
  3. Step 3: Cross multiply
    21,469.10x = 29,626.43 × 12,976.20
  4. Step 4: Simplify right side
    21,469.10x = 384,438,416.09
  5. Step 5: Solve for x
    x = 384,438,416.09/21,469.10
  6. Step 6: Final answer
    x = 17,906.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.