Home / 11,161.30-16,721.24-7,992.20

Finding the Fourth Proportional to 11,161.30, 16,721.24 and 7,992.20

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Solution

The fourth proportional to 11,161.30, 16,721.24 and 7,992.20 is: 11,973.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.30 : 16,721.24 = 7,992.20 : x
  2. Step 2: Convert to fraction form
    11,161.30/16,721.24 = 7,992.20/x
  3. Step 3: Cross multiply
    11,161.30x = 16,721.24 × 7,992.20
  4. Step 4: Simplify right side
    11,161.30x = 133,639,494.33
  5. Step 5: Solve for x
    x = 133,639,494.33/11,161.30
  6. Step 6: Final answer
    x = 11,973.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.