Home / 21,571.08-29,768.30-12,137.82

Finding the Fourth Proportional to 21,571.08, 29,768.30 and 12,137.82

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Solution

The fourth proportional to 21,571.08, 29,768.30 and 12,137.82 is: 16,750.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.08 : 29,768.30 = 12,137.82 : x
  2. Step 2: Convert to fraction form
    21,571.08/29,768.30 = 12,137.82/x
  3. Step 3: Cross multiply
    21,571.08x = 29,768.30 × 12,137.82
  4. Step 4: Simplify right side
    21,571.08x = 361,322,267.11
  5. Step 5: Solve for x
    x = 361,322,267.11/21,571.08
  6. Step 6: Final answer
    x = 16,750.31

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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.