Home / 21,272.04-31,910.24-8,135.44

Finding the Fourth Proportional to 21,272.04, 31,910.24 and 8,135.44

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Solution

The fourth proportional to 21,272.04, 31,910.24 and 8,135.44 is: 12,203.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.04 : 31,910.24 = 8,135.44 : x
  2. Step 2: Convert to fraction form
    21,272.04/31,910.24 = 8,135.44/x
  3. Step 3: Cross multiply
    21,272.04x = 31,910.24 × 8,135.44
  4. Step 4: Simplify right side
    21,272.04x = 259,603,842.91
  5. Step 5: Solve for x
    x = 259,603,842.91/21,272.04
  6. Step 6: Final answer
    x = 12,203.99

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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.