Home / 15,768.30-21,760.29-8,694.66

Finding the Fourth Proportional to 15,768.30, 21,760.29 and 8,694.66

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Solution

The fourth proportional to 15,768.30, 21,760.29 and 8,694.66 is: 11,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.30 : 21,760.29 = 8,694.66 : x
  2. Step 2: Convert to fraction form
    15,768.30/21,760.29 = 8,694.66/x
  3. Step 3: Cross multiply
    15,768.30x = 21,760.29 × 8,694.66
  4. Step 4: Simplify right side
    15,768.30x = 189,198,323.05
  5. Step 5: Solve for x
    x = 189,198,323.05/15,768.30
  6. Step 6: Final answer
    x = 11,998.65

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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.