Home / 21,469.85-29,628.57-11,910.36

Finding the Fourth Proportional to 21,469.85, 29,628.57 and 11,910.36

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Solution

The fourth proportional to 21,469.85, 29,628.57 and 11,910.36 is: 16,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,469.85 : 29,628.57 = 11,910.36 : x
  2. Step 2: Convert to fraction form
    21,469.85/29,628.57 = 11,910.36/x
  3. Step 3: Cross multiply
    21,469.85x = 29,628.57 × 11,910.36
  4. Step 4: Simplify right side
    21,469.85x = 352,887,023.94
  5. Step 5: Solve for x
    x = 352,887,023.94/21,469.85
  6. Step 6: Final answer
    x = 16,436.40

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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.