Home / 21,220.06-29,283.70-11,660.56

Finding the Fourth Proportional to 21,220.06, 29,283.70 and 11,660.56

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Solution

The fourth proportional to 21,220.06, 29,283.70 and 11,660.56 is: 16,091.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.06 : 29,283.70 = 11,660.56 : x
  2. Step 2: Convert to fraction form
    21,220.06/29,283.70 = 11,660.56/x
  3. Step 3: Cross multiply
    21,220.06x = 29,283.70 × 11,660.56
  4. Step 4: Simplify right side
    21,220.06x = 341,464,340.87
  5. Step 5: Solve for x
    x = 341,464,340.87/21,220.06
  6. Step 6: Final answer
    x = 16,091.58

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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.