Home / 21,906.35-30,230.73-12,474.91

Finding the Fourth Proportional to 21,906.35, 30,230.73 and 12,474.91

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Solution

The fourth proportional to 21,906.35, 30,230.73 and 12,474.91 is: 17,215.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906.35 : 30,230.73 = 12,474.91 : x
  2. Step 2: Convert to fraction form
    21,906.35/30,230.73 = 12,474.91/x
  3. Step 3: Cross multiply
    21,906.35x = 30,230.73 × 12,474.91
  4. Step 4: Simplify right side
    21,906.35x = 377,125,635.98
  5. Step 5: Solve for x
    x = 377,125,635.98/21,906.35
  6. Step 6: Final answer
    x = 17,215.36

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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.