Home / 20,691.28-28,554.60-11,738.44

Finding the Fourth Proportional to 20,691.28, 28,554.60 and 11,738.44

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Solution

The fourth proportional to 20,691.28, 28,554.60 and 11,738.44 is: 16,199.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.28 : 28,554.60 = 11,738.44 : x
  2. Step 2: Convert to fraction form
    20,691.28/28,554.60 = 11,738.44/x
  3. Step 3: Cross multiply
    20,691.28x = 28,554.60 × 11,738.44
  4. Step 4: Simplify right side
    20,691.28x = 335,186,458.82
  5. Step 5: Solve for x
    x = 335,186,458.82/20,691.28
  6. Step 6: Final answer
    x = 16,199.41

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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.