Home / 21,409.92-29,545.76-11,977.88

Finding the Fourth Proportional to 21,409.92, 29,545.76 and 11,977.88

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Solution

The fourth proportional to 21,409.92, 29,545.76 and 11,977.88 is: 16,529.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.92 : 29,545.76 = 11,977.88 : x
  2. Step 2: Convert to fraction form
    21,409.92/29,545.76 = 11,977.88/x
  3. Step 3: Cross multiply
    21,409.92x = 29,545.76 × 11,977.88
  4. Step 4: Simplify right side
    21,409.92x = 353,895,450.00
  5. Step 5: Solve for x
    x = 353,895,450.00/21,409.92
  6. Step 6: Final answer
    x = 16,529.51

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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.