Home / 21,251.06-29,326.50-11,819.64

Finding the Fourth Proportional to 21,251.06, 29,326.50 and 11,819.64

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Solution

The fourth proportional to 21,251.06, 29,326.50 and 11,819.64 is: 16,311.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.06 : 29,326.50 = 11,819.64 : x
  2. Step 2: Convert to fraction form
    21,251.06/29,326.50 = 11,819.64/x
  3. Step 3: Cross multiply
    21,251.06x = 29,326.50 × 11,819.64
  4. Step 4: Simplify right side
    21,251.06x = 346,628,672.46
  5. Step 5: Solve for x
    x = 346,628,672.46/21,251.06
  6. Step 6: Final answer
    x = 16,311.12

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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.