Home / 21,091.76-29,106.50-11,660.26

Finding the Fourth Proportional to 21,091.76, 29,106.50 and 11,660.26

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Solution

The fourth proportional to 21,091.76, 29,106.50 and 11,660.26 is: 16,091.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,091.76 : 29,106.50 = 11,660.26 : x
  2. Step 2: Convert to fraction form
    21,091.76/29,106.50 = 11,660.26/x
  3. Step 3: Cross multiply
    21,091.76x = 29,106.50 × 11,660.26
  4. Step 4: Simplify right side
    21,091.76x = 339,389,357.69
  5. Step 5: Solve for x
    x = 339,389,357.69/21,091.76
  6. Step 6: Final answer
    x = 16,091.09

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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.