Home / 21,076.36-31,620.30-7,226.44

Finding the Fourth Proportional to 21,076.36, 31,620.30 and 7,226.44

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Solution

The fourth proportional to 21,076.36, 31,620.30 and 7,226.44 is: 10,841.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.36 : 31,620.30 = 7,226.44 : x
  2. Step 2: Convert to fraction form
    21,076.36/31,620.30 = 7,226.44/x
  3. Step 3: Cross multiply
    21,076.36x = 31,620.30 × 7,226.44
  4. Step 4: Simplify right side
    21,076.36x = 228,502,200.73
  5. Step 5: Solve for x
    x = 228,502,200.73/21,076.36
  6. Step 6: Final answer
    x = 10,841.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.