Home / 21,200.83-29,256-11,768.78

Finding the Fourth Proportional to 21,200.83, 29,256 and 11,768.78

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Solution

The fourth proportional to 21,200.83, 29,256 and 11,768.78 is: 16,240.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.83 : 29,256 = 11,768.78 : x
  2. Step 2: Convert to fraction form
    21,200.83/29,256 = 11,768.78/x
  3. Step 3: Cross multiply
    21,200.83x = 29,256 × 11,768.78
  4. Step 4: Simplify right side
    21,200.83x = 344,307,427.68
  5. Step 5: Solve for x
    x = 344,307,427.68/21,200.83
  6. Step 6: Final answer
    x = 16,240.28

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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.