Home / 21,220.92-29,285.46-11,790.06

Finding the Fourth Proportional to 21,220.92, 29,285.46 and 11,790.06

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Solution

The fourth proportional to 21,220.92, 29,285.46 and 11,790.06 is: 16,270.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.92 : 29,285.46 = 11,790.06 : x
  2. Step 2: Convert to fraction form
    21,220.92/29,285.46 = 11,790.06/x
  3. Step 3: Cross multiply
    21,220.92x = 29,285.46 × 11,790.06
  4. Step 4: Simplify right side
    21,220.92x = 345,277,330.53
  5. Step 5: Solve for x
    x = 345,277,330.53/21,220.92
  6. Step 6: Final answer
    x = 16,270.61

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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.