Home / 21,179.52-29,227.92-11,748.32

Finding the Fourth Proportional to 21,179.52, 29,227.92 and 11,748.32

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Solution

The fourth proportional to 21,179.52, 29,227.92 and 11,748.32 is: 16,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.52 : 29,227.92 = 11,748.32 : x
  2. Step 2: Convert to fraction form
    21,179.52/29,227.92 = 11,748.32/x
  3. Step 3: Cross multiply
    21,179.52x = 29,227.92 × 11,748.32
  4. Step 4: Simplify right side
    21,179.52x = 343,378,957.09
  5. Step 5: Solve for x
    x = 343,378,957.09/21,179.52
  6. Step 6: Final answer
    x = 16,212.78

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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.