Home / 21,251.28-29,326.48-11,819.64

Finding the Fourth Proportional to 21,251.28, 29,326.48 and 11,819.64

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Solution

The fourth proportional to 21,251.28, 29,326.48 and 11,819.64 is: 16,310.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.28 : 29,326.48 = 11,819.64 : x
  2. Step 2: Convert to fraction form
    21,251.28/29,326.48 = 11,819.64/x
  3. Step 3: Cross multiply
    21,251.28x = 29,326.48 × 11,819.64
  4. Step 4: Simplify right side
    21,251.28x = 346,628,436.07
  5. Step 5: Solve for x
    x = 346,628,436.07/21,251.28
  6. Step 6: Final answer
    x = 16,310.94

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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.