Home / 21,080.92-29,091.66-11,520.94

Finding the Fourth Proportional to 21,080.92, 29,091.66 and 11,520.94

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Solution

The fourth proportional to 21,080.92, 29,091.66 and 11,520.94 is: 15,898.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.92 : 29,091.66 = 11,520.94 : x
  2. Step 2: Convert to fraction form
    21,080.92/29,091.66 = 11,520.94/x
  3. Step 3: Cross multiply
    21,080.92x = 29,091.66 × 11,520.94
  4. Step 4: Simplify right side
    21,080.92x = 335,163,269.36
  5. Step 5: Solve for x
    x = 335,163,269.36/21,080.92
  6. Step 6: Final answer
    x = 15,898.89

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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.